21357804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4721}}^1$

素因数の和:4770

約数の個数: 48

約数和(自身を含む): 55530720

約数和(自身を除く): 34172916

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 58, 78, 87, 116, 156, 174, 348, 377, 754, 1131, 1508, 2262, 4524, 4721, 9442, 14163, 18884, 28326, 56652, 61373, 122746, 136909, 184119, 245492, 273818, 368238, 410727, 547636, 736476, 821454, 1642908, 1779817, 3559634, 5339451, 7119268, 10678902, 21357804]

約数ペア:

[(1, 21357804), (2, 10678902), (3, 7119268), (4, 5339451), (6, 3559634), (12, 1779817), (13, 1642908), (26, 821454), (29, 736476), (39, 547636), (52, 410727), (58, 368238), (78, 273818), (87, 245492), (116, 184119), (156, 136909), (174, 122746), (348, 61373), (377, 56652), (754, 28326), (1131, 18884), (1508, 14163), (2262, 9442), (4524, 4721)]