64485380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 139708800

約数和(自身を除く): 75223420

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 167, 172, 215, 334, 430, 449, 668, 835, 860, 898, 1670, 1796, 2245, 3340, 4490, 7181, 8980, 14362, 19307, 28724, 35905, 38614, 71810, 74983, 77228, 96535, 143620, 149966, 193070, 299932, 374915, 386140, 749830, 1499660, 3224269, 6448538, 12897076, 16121345, 32242690, 64485380]

約数ペア:

[(1, 64485380), (2, 32242690), (4, 16121345), (5, 12897076), (10, 6448538), (20, 3224269), (43, 1499660), (86, 749830), (167, 386140), (172, 374915), (215, 299932), (334, 193070), (430, 149966), (449, 143620), (668, 96535), (835, 77228), (860, 74983), (898, 71810), (1670, 38614), (1796, 35905), (2245, 28724), (3340, 19307), (4490, 14362), (7181, 8980)]