21201700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 50746752

約数和(自身を除く): 29545052

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 47, 50, 52, 65, 94, 100, 130, 188, 235, 260, 325, 347, 470, 611, 650, 694, 940, 1175, 1222, 1300, 1388, 1735, 2350, 2444, 3055, 3470, 4511, 4700, 6110, 6940, 8675, 9022, 12220, 15275, 16309, 17350, 18044, 22555, 30550, 32618, 34700, 45110, 61100, 65236, 81545, 90220, 112775, 163090, 212017, 225550, 326180, 407725, 424034, 451100, 815450, 848068, 1060085, 1630900, 2120170, 4240340, 5300425, 10600850, 21201700]

約数ペア:

[(1, 21201700), (2, 10600850), (4, 5300425), (5, 4240340), (10, 2120170), (13, 1630900), (20, 1060085), (25, 848068), (26, 815450), (47, 451100), (50, 424034), (52, 407725), (65, 326180), (94, 225550), (100, 212017), (130, 163090), (188, 112775), (235, 90220), (260, 81545), (325, 65236), (347, 61100), (470, 45110), (611, 34700), (650, 32618), (694, 30550), (940, 22555), (1175, 18044), (1222, 17350), (1300, 16309), (1388, 15275), (1735, 12220), (2350, 9022), (2444, 8675), (3055, 6940), (3470, 6110), (4511, 4700)]