20874464

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1$

素因数の和:200

約数の個数: 72

約数和(自身を含む): 47045880

約数和(自身を除く): 26171416

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 139, 152, 208, 247, 278, 304, 361, 416, 494, 556, 608, 722, 988, 1112, 1444, 1807, 1976, 2224, 2641, 2888, 3614, 3952, 4448, 4693, 5282, 5776, 7228, 7904, 9386, 10564, 11552, 14456, 18772, 21128, 28912, 34333, 37544, 42256, 50179, 57824, 68666, 75088, 84512, 100358, 137332, 150176, 200716, 274664, 401432, 549328, 652327, 802864, 1098656, 1304654, 1605728, 2609308, 5218616, 10437232, 20874464]

約数ペア:

[(1, 20874464), (2, 10437232), (4, 5218616), (8, 2609308), (13, 1605728), (16, 1304654), (19, 1098656), (26, 802864), (32, 652327), (38, 549328), (52, 401432), (76, 274664), (104, 200716), (139, 150176), (152, 137332), (208, 100358), (247, 84512), (278, 75088), (304, 68666), (361, 57824), (416, 50179), (494, 42256), (556, 37544), (608, 34333), (722, 28912), (988, 21128), (1112, 18772), (1444, 14456), (1807, 11552), (1976, 10564), (2224, 9386), (2641, 7904), (2888, 7228), (3614, 5776), (3952, 5282), (4448, 4693)]