21040500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13}}^2\times {\mathrm{83}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 67144896

約数和(自身を除く): 46104396

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 83, 100, 125, 130, 150, 156, 166, 169, 195, 249, 250, 260, 300, 325, 332, 338, 375, 390, 415, 498, 500, 507, 650, 676, 750, 780, 830, 845, 975, 996, 1014, 1079, 1245, 1300, 1500, 1625, 1660, 1690, 1950, 2028, 2075, 2158, 2490, 2535, 3237, 3250, 3380, 3900, 4150, 4225, 4316, 4875, 4980, 5070, 5395, 6225, 6474, 6500, 8300, 8450, 9750, 10140, 10375, 10790, 12450, 12675, 12948, 14027, 16185, 16900, 19500, 20750, 21125, 21580, 24900, 25350, 26975, 28054, 31125, 32370, 41500, 42081, 42250, 50700, 53950, 56108, 62250, 63375, 64740, 70135, 80925, 84162, 84500, 107900, 124500, 126750, 134875, 140270, 161850, 168324, 210405, 253500, 269750, 280540, 323700, 350675, 404625, 420810, 539500, 701350, 809250, 841620, 1052025, 1402700, 1618500, 1753375, 2104050, 3506750, 4208100, 5260125, 7013500, 10520250, 21040500]

約数ペア:

[(1, 21040500), (2, 10520250), (3, 7013500), (4, 5260125), (5, 4208100), (6, 3506750), (10, 2104050), (12, 1753375), (13, 1618500), (15, 1402700), (20, 1052025), (25, 841620), (26, 809250), (30, 701350), (39, 539500), (50, 420810), (52, 404625), (60, 350675), (65, 323700), (75, 280540), (78, 269750), (83, 253500), (100, 210405), (125, 168324), (130, 161850), (150, 140270), (156, 134875), (166, 126750), (169, 124500), (195, 107900), (249, 84500), (250, 84162), (260, 80925), (300, 70135), (325, 64740), (332, 63375), (338, 62250), (375, 56108), (390, 53950), (415, 50700), (498, 42250), (500, 42081), (507, 41500), (650, 32370), (676, 31125), (750, 28054), (780, 26975), (830, 25350), (845, 24900), (975, 21580), (996, 21125), (1014, 20750), (1079, 19500), (1245, 16900), (1300, 16185), (1500, 14027), (1625, 12948), (1660, 12675), (1690, 12450), (1950, 10790), (2028, 10375), (2075, 10140), (2158, 9750), (2490, 8450), (2535, 8300), (3237, 6500), (3250, 6474), (3380, 6225), (3900, 5395), (4150, 5070), (4225, 4980), (4316, 4875)]