20144575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9853505

約数列:

[1, 5, 11, 17, 25, 31, 55, 85, 139, 155, 187, 275, 341, 425, 527, 695, 775, 935, 1529, 1705, 2363, 2635, 3475, 4309, 4675, 5797, 7645, 8525, 11815, 13175, 21545, 25993, 28985, 38225, 47399, 59075, 73253, 107725, 129965, 144925, 236995, 366265, 649825, 805783, 1184975, 1831325, 4028915, 20144575]

約数ペア:

[(1, 20144575), (5, 4028915), (11, 1831325), (17, 1184975), (25, 805783), (31, 649825), (55, 366265), (85, 236995), (139, 144925), (155, 129965), (187, 107725), (275, 73253), (341, 59075), (425, 47399), (527, 38225), (695, 28985), (775, 25993), (935, 21545), (1529, 13175), (1705, 11815), (2363, 8525), (2635, 7645), (3475, 5797), (4309, 4675)]