20040790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1531}}^1$

素因数の和:1573

約数の個数: 64

約数和(自身を含む): 47651328

約数和(自身を除く): 27610538

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 34, 35, 55, 70, 77, 85, 110, 119, 154, 170, 187, 238, 374, 385, 595, 770, 935, 1190, 1309, 1531, 1870, 2618, 3062, 6545, 7655, 10717, 13090, 15310, 16841, 21434, 26027, 33682, 52054, 53585, 84205, 107170, 117887, 130135, 168410, 182189, 235774, 260270, 286297, 364378, 572594, 589435, 910945, 1178870, 1431485, 1821890, 2004079, 2862970, 4008158, 10020395, 20040790]

約数ペア:

[(1, 20040790), (2, 10020395), (5, 4008158), (7, 2862970), (10, 2004079), (11, 1821890), (14, 1431485), (17, 1178870), (22, 910945), (34, 589435), (35, 572594), (55, 364378), (70, 286297), (77, 260270), (85, 235774), (110, 182189), (119, 168410), (154, 130135), (170, 117887), (187, 107170), (238, 84205), (374, 53585), (385, 52054), (595, 33682), (770, 26027), (935, 21434), (1190, 16841), (1309, 15310), (1531, 13090), (1870, 10717), (2618, 7655), (3062, 6545)]