21103875

素因数分解:

$3^3\times 5^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:87

約数の個数: 96

約数和(自身を含む): 43392960

約数和(自身を除く): 22289085

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 37, 39, 45, 65, 75, 111, 117, 125, 135, 169, 185, 195, 225, 325, 333, 351, 375, 481, 507, 555, 585, 675, 845, 925, 975, 999, 1125, 1443, 1521, 1625, 1665, 1755, 2405, 2535, 2775, 2925, 3375, 4225, 4329, 4563, 4625, 4875, 4995, 6253, 7215, 7605, 8325, 8775, 12025, 12675, 12987, 13875, 14625, 18759, 21125, 21645, 22815, 24975, 31265, 36075, 38025, 41625, 43875, 56277, 60125, 63375, 64935, 93795, 108225, 114075, 124875, 156325, 168831, 180375, 190125, 281385, 324675, 468975, 541125, 570375, 781625, 844155, 1406925, 1623375, 2344875, 4220775, 7034625, 21103875]

約数ペア:

[(1, 21103875), (3, 7034625), (5, 4220775), (9, 2344875), (13, 1623375), (15, 1406925), (25, 844155), (27, 781625), (37, 570375), (39, 541125), (45, 468975), (65, 324675), (75, 281385), (111, 190125), (117, 180375), (125, 168831), (135, 156325), (169, 124875), (185, 114075), (195, 108225), (225, 93795), (325, 64935), (333, 63375), (351, 60125), (375, 56277), (481, 43875), (507, 41625), (555, 38025), (585, 36075), (675, 31265), (845, 24975), (925, 22815), (975, 21645), (999, 21125), (1125, 18759), (1443, 14625), (1521, 13875), (1625, 12987), (1665, 12675), (1755, 12025), (2405, 8775), (2535, 8325), (2775, 7605), (2925, 7215), (3375, 6253), (4225, 4995), (4329, 4875), (4563, 4625)]