20855172

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3109}}^1$

素因数の和:3172

約数の個数: 48

約数和(自身を含む): 53641280

約数和(自身を除く): 32786108

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3109, 3354, 6218, 6708, 9327, 12436, 18654, 37308, 40417, 80834, 121251, 133687, 161668, 242502, 267374, 401061, 485004, 534748, 802122, 1604244, 1737931, 3475862, 5213793, 6951724, 10427586, 20855172]

約数ペア:

[(1, 20855172), (2, 10427586), (3, 6951724), (4, 5213793), (6, 3475862), (12, 1737931), (13, 1604244), (26, 802122), (39, 534748), (43, 485004), (52, 401061), (78, 267374), (86, 242502), (129, 161668), (156, 133687), (172, 121251), (258, 80834), (516, 40417), (559, 37308), (1118, 18654), (1677, 12436), (2236, 9327), (3109, 6708), (3354, 6218)]