21000944655

素因数分解:

$3^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{549691}}^1$

素因数の和:549988

約数の個数: 32

約数和(自身を含む): 37467006720

約数和(自身を除く): 16466062065

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 283, 849, 1415, 2547, 4245, 7641, 12735, 38205, 549691, 1649073, 2748455, 4947219, 8245365, 14841657, 24736095, 74208285, 155562553, 466687659, 777812765, 1400062977, 2333438295, 4200188931, 7000314885, 21000944655]

約数ペア:

[(1, 21000944655), (3, 7000314885), (5, 4200188931), (9, 2333438295), (15, 1400062977), (27, 777812765), (45, 466687659), (135, 155562553), (283, 74208285), (849, 24736095), (1415, 14841657), (2547, 8245365), (4245, 4947219), (7641, 2748455), (12735, 1649073), (38205, 549691)]