21635978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2243}}^1$

素因数の和:2318

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 19079158

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 182, 371, 689, 742, 1378, 2243, 4486, 4823, 9646, 15701, 29159, 31402, 58318, 118879, 204113, 237758, 408226, 832153, 1545427, 1664306, 3090854, 10817989, 21635978]

約数ペア:

[(1, 21635978), (2, 10817989), (7, 3090854), (13, 1664306), (14, 1545427), (26, 832153), (53, 408226), (91, 237758), (106, 204113), (182, 118879), (371, 58318), (689, 31402), (742, 29159), (1378, 15701), (2243, 9646), (4486, 4823)]