21000298512

素因数分解:

$2^4\times 3^1\times {\mathrm{1571}}^1\times {\mathrm{278489}}^1$

素因数の和:280071

約数の個数: 40

約数和(自身を含む): 54285498720

約数和(自身を除く): 33285200208

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 1571, 3142, 4713, 6284, 9426, 12568, 18852, 25136, 37704, 75408, 278489, 556978, 835467, 1113956, 1670934, 2227912, 3341868, 4455824, 6683736, 13367472, 437506219, 875012438, 1312518657, 1750024876, 2625037314, 3500049752, 5250074628, 7000099504, 10500149256, 21000298512]

約数ペア:

[(1, 21000298512), (2, 10500149256), (3, 7000099504), (4, 5250074628), (6, 3500049752), (8, 2625037314), (12, 1750024876), (16, 1312518657), (24, 875012438), (48, 437506219), (1571, 13367472), (3142, 6683736), (4713, 4455824), (6284, 3341868), (9426, 2227912), (12568, 1670934), (18852, 1113956), (25136, 835467), (37704, 556978), (75408, 278489)]