64493980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3947}}^1$

素因数の和:4018

約数の個数: 48

約数和(自身を含む): 145918080

約数和(自身を除く): 81424100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 3947, 4085, 7894, 8170, 15788, 16340, 19735, 39470, 74993, 78940, 149986, 169721, 299972, 339442, 374965, 678884, 749930, 848605, 1499860, 1697210, 3224699, 3394420, 6449398, 12898796, 16123495, 32246990, 64493980]

約数ペア:

[(1, 64493980), (2, 32246990), (4, 16123495), (5, 12898796), (10, 6449398), (19, 3394420), (20, 3224699), (38, 1697210), (43, 1499860), (76, 848605), (86, 749930), (95, 678884), (172, 374965), (190, 339442), (215, 299972), (380, 169721), (430, 149986), (817, 78940), (860, 74993), (1634, 39470), (3268, 19735), (3947, 16340), (4085, 15788), (7894, 8170)]