20513752

素因数分解:

$2^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1217}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 45821160

約数和(自身を除く): 25307408

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 49, 56, 86, 98, 172, 196, 301, 344, 392, 602, 1204, 1217, 2107, 2408, 2434, 4214, 4868, 8428, 8519, 9736, 16856, 17038, 34076, 52331, 59633, 68152, 104662, 119266, 209324, 238532, 366317, 418648, 477064, 732634, 1465268, 2564219, 2930536, 5128438, 10256876, 20513752]

約数ペア:

[(1, 20513752), (2, 10256876), (4, 5128438), (7, 2930536), (8, 2564219), (14, 1465268), (28, 732634), (43, 477064), (49, 418648), (56, 366317), (86, 238532), (98, 209324), (172, 119266), (196, 104662), (301, 68152), (344, 59633), (392, 52331), (602, 34076), (1204, 17038), (1217, 16856), (2107, 9736), (2408, 8519), (2434, 8428), (4214, 4868)]