405770896

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{163}}^1\times {\mathrm{991}}^1$

素因数の和:1319

約数の個数: 40

約数和(自身を含む): 796845824

約数和(自身を除く): 391074928

約数列:

[1, 2, 4, 8, 16, 157, 163, 314, 326, 628, 652, 991, 1256, 1304, 1982, 2512, 2608, 3964, 7928, 15856, 25591, 51182, 102364, 155587, 161533, 204728, 311174, 323066, 409456, 622348, 646132, 1244696, 1292264, 2489392, 2584528, 25360681, 50721362, 101442724, 202885448, 405770896]

約数ペア:

[(1, 405770896), (2, 202885448), (4, 101442724), (8, 50721362), (16, 25360681), (157, 2584528), (163, 2489392), (314, 1292264), (326, 1244696), (628, 646132), (652, 622348), (991, 409456), (1256, 323066), (1304, 311174), (1982, 204728), (2512, 161533), (2608, 155587), (3964, 102364), (7928, 51182), (15856, 25591)]