21406500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 144

約数和(自身を含む): 69503616

約数和(自身を除く): 48097116

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 67, 71, 75, 90, 100, 125, 134, 142, 150, 180, 201, 213, 225, 250, 268, 284, 300, 335, 355, 375, 402, 426, 450, 500, 603, 639, 670, 710, 750, 804, 852, 900, 1005, 1065, 1125, 1206, 1278, 1340, 1420, 1500, 1675, 1775, 2010, 2130, 2250, 2412, 2556, 3015, 3195, 3350, 3550, 4020, 4260, 4500, 4757, 5025, 5325, 6030, 6390, 6700, 7100, 8375, 8875, 9514, 10050, 10650, 12060, 12780, 14271, 15075, 15975, 16750, 17750, 19028, 20100, 21300, 23785, 25125, 26625, 28542, 30150, 31950, 33500, 35500, 42813, 47570, 50250, 53250, 57084, 60300, 63900, 71355, 75375, 79875, 85626, 95140, 100500, 106500, 118925, 142710, 150750, 159750, 171252, 214065, 237850, 285420, 301500, 319500, 356775, 428130, 475700, 594625, 713550, 856260, 1070325, 1189250, 1427100, 1783875, 2140650, 2378500, 3567750, 4281300, 5351625, 7135500, 10703250, 21406500]

約数ペア:

[(1, 21406500), (2, 10703250), (3, 7135500), (4, 5351625), (5, 4281300), (6, 3567750), (9, 2378500), (10, 2140650), (12, 1783875), (15, 1427100), (18, 1189250), (20, 1070325), (25, 856260), (30, 713550), (36, 594625), (45, 475700), (50, 428130), (60, 356775), (67, 319500), (71, 301500), (75, 285420), (90, 237850), (100, 214065), (125, 171252), (134, 159750), (142, 150750), (150, 142710), (180, 118925), (201, 106500), (213, 100500), (225, 95140), (250, 85626), (268, 79875), (284, 75375), (300, 71355), (335, 63900), (355, 60300), (375, 57084), (402, 53250), (426, 50250), (450, 47570), (500, 42813), (603, 35500), (639, 33500), (670, 31950), (710, 30150), (750, 28542), (804, 26625), (852, 25125), (900, 23785), (1005, 21300), (1065, 20100), (1125, 19028), (1206, 17750), (1278, 16750), (1340, 15975), (1420, 15075), (1500, 14271), (1675, 12780), (1775, 12060), (2010, 10650), (2130, 10050), (2250, 9514), (2412, 8875), (2556, 8375), (3015, 7100), (3195, 6700), (3350, 6390), (3550, 6030), (4020, 5325), (4260, 5025), (4500, 4757)]