638545500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{17}}^2\times {\mathrm{491}}^1$

素因数の和:550

約数の個数: 216

約数和(自身を含む): 2144220624

約数和(自身を除く): 1505675124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 85, 90, 100, 102, 125, 150, 153, 170, 180, 204, 225, 250, 255, 289, 300, 306, 340, 375, 425, 450, 491, 500, 510, 578, 612, 750, 765, 850, 867, 900, 982, 1020, 1125, 1156, 1275, 1445, 1473, 1500, 1530, 1700, 1734, 1964, 2125, 2250, 2455, 2550, 2601, 2890, 2946, 3060, 3468, 3825, 4250, 4335, 4419, 4500, 4910, 5100, 5202, 5780, 5892, 6375, 7225, 7365, 7650, 8347, 8500, 8670, 8838, 9820, 10404, 12275, 12750, 13005, 14450, 14730, 15300, 16694, 17340, 17676, 19125, 21675, 22095, 24550, 25041, 25500, 26010, 28900, 29460, 33388, 36125, 36825, 38250, 41735, 43350, 44190, 49100, 50082, 52020, 61375, 65025, 72250, 73650, 75123, 76500, 83470, 86700, 88380, 100164, 108375, 110475, 122750, 125205, 130050, 141899, 144500, 147300, 150246, 166940, 184125, 208675, 216750, 220950, 245500, 250410, 260100, 283798, 300492, 325125, 368250, 375615, 417350, 425697, 433500, 441900, 500820, 552375, 567596, 626025, 650250, 709495, 736500, 751230, 834700, 851394, 1043375, 1104750, 1252050, 1277091, 1300500, 1418990, 1502460, 1702788, 1878075, 2086750, 2128485, 2209500, 2504100, 2554182, 2837980, 3130125, 3547475, 3756150, 4173500, 4256970, 5108364, 6260250, 6385455, 7094950, 7512300, 8513940, 9390375, 10642425, 12520500, 12770910, 14189900, 17737375, 18780750, 21284850, 25541820, 31927275, 35474750, 37561500, 42569700, 53212125, 63854550, 70949500, 106424250, 127709100, 159636375, 212848500, 319272750, 638545500]

約数ペア:

[(1, 638545500), (2, 319272750), (3, 212848500), (4, 159636375), (5, 127709100), (6, 106424250), (9, 70949500), (10, 63854550), (12, 53212125), (15, 42569700), (17, 37561500), (18, 35474750), (20, 31927275), (25, 25541820), (30, 21284850), (34, 18780750), (36, 17737375), (45, 14189900), (50, 12770910), (51, 12520500), (60, 10642425), (68, 9390375), (75, 8513940), (85, 7512300), (90, 7094950), (100, 6385455), (102, 6260250), (125, 5108364), (150, 4256970), (153, 4173500), (170, 3756150), (180, 3547475), (204, 3130125), (225, 2837980), (250, 2554182), (255, 2504100), (289, 2209500), (300, 2128485), (306, 2086750), (340, 1878075), (375, 1702788), (425, 1502460), (450, 1418990), (491, 1300500), (500, 1277091), (510, 1252050), (578, 1104750), (612, 1043375), (750, 851394), (765, 834700), (850, 751230), (867, 736500), (900, 709495), (982, 650250), (1020, 626025), (1125, 567596), (1156, 552375), (1275, 500820), (1445, 441900), (1473, 433500), (1500, 425697), (1530, 417350), (1700, 375615), (1734, 368250), (1964, 325125), (2125, 300492), (2250, 283798), (2455, 260100), (2550, 250410), (2601, 245500), (2890, 220950), (2946, 216750), (3060, 208675), (3468, 184125), (3825, 166940), (4250, 150246), (4335, 147300), (4419, 144500), (4500, 141899), (4910, 130050), (5100, 125205), (5202, 122750), (5780, 110475), (5892, 108375), (6375, 100164), (7225, 88380), (7365, 86700), (7650, 83470), (8347, 76500), (8500, 75123), (8670, 73650), (8838, 72250), (9820, 65025), (10404, 61375), (12275, 52020), (12750, 50082), (13005, 49100), (14450, 44190), (14730, 43350), (15300, 41735), (16694, 38250), (17340, 36825), (17676, 36125), (19125, 33388), (21675, 29460), (22095, 28900), (24550, 26010), (25041, 25500)]