19955700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:431

約数の個数: 144

約数和(自身を含む): 67704000

約数和(自身を除く): 47748300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 27, 30, 36, 38, 45, 50, 54, 57, 60, 75, 76, 90, 95, 100, 108, 114, 135, 150, 171, 180, 190, 225, 228, 270, 285, 300, 342, 380, 389, 450, 475, 513, 540, 570, 675, 684, 778, 855, 900, 950, 1026, 1140, 1167, 1350, 1425, 1556, 1710, 1900, 1945, 2052, 2334, 2565, 2700, 2850, 3420, 3501, 3890, 4275, 4668, 5130, 5700, 5835, 7002, 7391, 7780, 8550, 9725, 10260, 10503, 11670, 12825, 14004, 14782, 17100, 17505, 19450, 21006, 22173, 23340, 25650, 29175, 29564, 35010, 36955, 38900, 42012, 44346, 51300, 52515, 58350, 66519, 70020, 73910, 87525, 88692, 105030, 110865, 116700, 133038, 147820, 175050, 184775, 199557, 210060, 221730, 262575, 266076, 332595, 350100, 369550, 399114, 443460, 525150, 554325, 665190, 739100, 798228, 997785, 1050300, 1108650, 1330380, 1662975, 1995570, 2217300, 3325950, 3991140, 4988925, 6651900, 9977850, 19955700]

約数ペア:

[(1, 19955700), (2, 9977850), (3, 6651900), (4, 4988925), (5, 3991140), (6, 3325950), (9, 2217300), (10, 1995570), (12, 1662975), (15, 1330380), (18, 1108650), (19, 1050300), (20, 997785), (25, 798228), (27, 739100), (30, 665190), (36, 554325), (38, 525150), (45, 443460), (50, 399114), (54, 369550), (57, 350100), (60, 332595), (75, 266076), (76, 262575), (90, 221730), (95, 210060), (100, 199557), (108, 184775), (114, 175050), (135, 147820), (150, 133038), (171, 116700), (180, 110865), (190, 105030), (225, 88692), (228, 87525), (270, 73910), (285, 70020), (300, 66519), (342, 58350), (380, 52515), (389, 51300), (450, 44346), (475, 42012), (513, 38900), (540, 36955), (570, 35010), (675, 29564), (684, 29175), (778, 25650), (855, 23340), (900, 22173), (950, 21006), (1026, 19450), (1140, 17505), (1167, 17100), (1350, 14782), (1425, 14004), (1556, 12825), (1710, 11670), (1900, 10503), (1945, 10260), (2052, 9725), (2334, 8550), (2565, 7780), (2700, 7391), (2850, 7002), (3420, 5835), (3501, 5700), (3890, 5130), (4275, 4668)]