20921440514

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{2477}}^1\times {\mathrm{24989}}^1$

素因数の和:27494

約数の個数: 24

約数和(自身を含む): 33996945780

約数和(自身を除く): 13075505266

約数列:

[1, 2, 13, 26, 169, 338, 2477, 4954, 24989, 32201, 49978, 64402, 324857, 418613, 649714, 837226, 4223141, 8446282, 61897753, 123795506, 804670789, 1609341578, 10460720257, 20921440514]

約数ペア:

[(1, 20921440514), (2, 10460720257), (13, 1609341578), (26, 804670789), (169, 123795506), (338, 61897753), (2477, 8446282), (4954, 4223141), (24989, 837226), (32201, 649714), (49978, 418613), (64402, 324857)]