20351156

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 42819840

約数和(自身を除く): 22468684

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 71, 116, 142, 203, 284, 353, 406, 497, 706, 812, 994, 1412, 1988, 2059, 2471, 4118, 4942, 8236, 9884, 10237, 14413, 20474, 25063, 28826, 40948, 50126, 57652, 71659, 100252, 143318, 175441, 286636, 350882, 701764, 726827, 1453654, 2907308, 5087789, 10175578, 20351156]

約数ペア:

[(1, 20351156), (2, 10175578), (4, 5087789), (7, 2907308), (14, 1453654), (28, 726827), (29, 701764), (58, 350882), (71, 286636), (116, 175441), (142, 143318), (203, 100252), (284, 71659), (353, 57652), (406, 50126), (497, 40948), (706, 28826), (812, 25063), (994, 20474), (1412, 14413), (1988, 10237), (2059, 9884), (2471, 8236), (4118, 4942)]