64393960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:646

約数の個数: 64

約数和(自身を含む): 154411920

約数和(自身を除く): 90017960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 281, 337, 340, 562, 674, 680, 1124, 1348, 1405, 1685, 2248, 2696, 2810, 3370, 4777, 5620, 5729, 6740, 9554, 11240, 11458, 13480, 19108, 22916, 23885, 28645, 38216, 45832, 47770, 57290, 94697, 95540, 114580, 189394, 191080, 229160, 378788, 473485, 757576, 946970, 1609849, 1893940, 3219698, 3787880, 6439396, 8049245, 12878792, 16098490, 32196980, 64393960]

約数ペア:

[(1, 64393960), (2, 32196980), (4, 16098490), (5, 12878792), (8, 8049245), (10, 6439396), (17, 3787880), (20, 3219698), (34, 1893940), (40, 1609849), (68, 946970), (85, 757576), (136, 473485), (170, 378788), (281, 229160), (337, 191080), (340, 189394), (562, 114580), (674, 95540), (680, 94697), (1124, 57290), (1348, 47770), (1405, 45832), (1685, 38216), (2248, 28645), (2696, 23885), (2810, 22916), (3370, 19108), (4777, 13480), (5620, 11458), (5729, 11240), (6740, 9554)]