131321860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{881}}^1$

素因数の和:1176

約数の個数: 48

約数和(自身を含む): 286720560

約数和(自身を除く): 155398700

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 257, 290, 514, 580, 881, 1028, 1285, 1762, 2570, 3524, 4405, 5140, 7453, 8810, 14906, 17620, 25549, 29812, 37265, 51098, 74530, 102196, 127745, 149060, 226417, 255490, 452834, 510980, 905668, 1132085, 2264170, 4528340, 6566093, 13132186, 26264372, 32830465, 65660930, 131321860]

約数ペア:

[(1, 131321860), (2, 65660930), (4, 32830465), (5, 26264372), (10, 13132186), (20, 6566093), (29, 4528340), (58, 2264170), (116, 1132085), (145, 905668), (257, 510980), (290, 452834), (514, 255490), (580, 226417), (881, 149060), (1028, 127745), (1285, 102196), (1762, 74530), (2570, 51098), (3524, 37265), (4405, 29812), (5140, 25549), (7453, 17620), (8810, 14906)]