20905612

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 45660160

約数和(自身を除く): 24754548

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 158, 182, 316, 364, 553, 727, 1027, 1106, 1454, 2054, 2212, 2908, 4108, 5089, 7189, 9451, 10178, 14378, 18902, 20356, 28756, 37804, 57433, 66157, 114866, 132314, 229732, 264628, 402031, 746629, 804062, 1493258, 1608124, 2986516, 5226403, 10452806, 20905612]

約数ペア:

[(1, 20905612), (2, 10452806), (4, 5226403), (7, 2986516), (13, 1608124), (14, 1493258), (26, 804062), (28, 746629), (52, 402031), (79, 264628), (91, 229732), (158, 132314), (182, 114866), (316, 66157), (364, 57433), (553, 37804), (727, 28756), (1027, 20356), (1106, 18902), (1454, 14378), (2054, 10178), (2212, 9451), (2908, 7189), (4108, 5089)]