21811088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5519}}^1$

素因数の和:5559

約数の個数: 40

約数和(自身を含む): 47913600

約数和(自身を除く): 26102512

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5519, 11038, 22076, 44152, 71747, 88304, 104861, 143494, 209722, 286988, 419444, 573976, 838888, 1147952, 1363193, 1677776, 2726386, 5452772, 10905544, 21811088]

約数ペア:

[(1, 21811088), (2, 10905544), (4, 5452772), (8, 2726386), (13, 1677776), (16, 1363193), (19, 1147952), (26, 838888), (38, 573976), (52, 419444), (76, 286988), (104, 209722), (152, 143494), (208, 104861), (247, 88304), (304, 71747), (494, 44152), (988, 22076), (1976, 11038), (3952, 5519)]