64999180

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 139426560

約数和(自身を除く): 74427380

約数列:

[1, 2, 4, 5, 10, 20, 103, 139, 206, 227, 278, 412, 454, 515, 556, 695, 908, 1030, 1135, 1390, 2060, 2270, 2780, 4540, 14317, 23381, 28634, 31553, 46762, 57268, 63106, 71585, 93524, 116905, 126212, 143170, 157765, 233810, 286340, 315530, 467620, 631060, 3249959, 6499918, 12999836, 16249795, 32499590, 64999180]

約数ペア:

[(1, 64999180), (2, 32499590), (4, 16249795), (5, 12999836), (10, 6499918), (20, 3249959), (103, 631060), (139, 467620), (206, 315530), (227, 286340), (278, 233810), (412, 157765), (454, 143170), (515, 126212), (556, 116905), (695, 93524), (908, 71585), (1030, 63106), (1135, 57268), (1390, 46762), (2060, 31553), (2270, 28634), (2780, 23381), (4540, 14317)]