89957780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21521}}^1$

素因数の和:21560

約数の個数: 48

約数和(自身を含む): 216941760

約数和(自身を除く): 126983980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 21521, 43042, 86084, 107605, 215210, 236731, 408899, 430420, 473462, 817798, 946924, 1183655, 1635596, 2044495, 2367310, 4088990, 4497889, 4734620, 8177980, 8995778, 17991556, 22489445, 44978890, 89957780]

約数ペア:

[(1, 89957780), (2, 44978890), (4, 22489445), (5, 17991556), (10, 8995778), (11, 8177980), (19, 4734620), (20, 4497889), (22, 4088990), (38, 2367310), (44, 2044495), (55, 1635596), (76, 1183655), (95, 946924), (110, 817798), (190, 473462), (209, 430420), (220, 408899), (380, 236731), (418, 215210), (836, 107605), (1045, 86084), (2090, 43042), (4180, 21521)]