20623664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{379}}^1$

素因数の和:585

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 21784336

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 179, 304, 358, 379, 716, 758, 1432, 1516, 2864, 3032, 3401, 6064, 6802, 7201, 13604, 14402, 27208, 28804, 54416, 57608, 67841, 115216, 135682, 271364, 542728, 1085456, 1288979, 2577958, 5155916, 10311832, 20623664]

約数ペア:

[(1, 20623664), (2, 10311832), (4, 5155916), (8, 2577958), (16, 1288979), (19, 1085456), (38, 542728), (76, 271364), (152, 135682), (179, 115216), (304, 67841), (358, 57608), (379, 54416), (716, 28804), (758, 27208), (1432, 14402), (1516, 13604), (2864, 7201), (3032, 6802), (3401, 6064)]