20677475

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 32289600

約数和(自身を除く): 11612125

約数列:

[1, 5, 7, 13, 25, 35, 61, 65, 91, 149, 175, 305, 325, 427, 455, 745, 793, 1043, 1525, 1937, 2135, 2275, 3725, 3965, 5215, 5551, 9089, 9685, 10675, 13559, 19825, 26075, 27755, 45445, 48425, 63623, 67795, 118157, 138775, 227225, 318115, 338975, 590785, 827099, 1590575, 2953925, 4135495, 20677475]

約数ペア:

[(1, 20677475), (5, 4135495), (7, 2953925), (13, 1590575), (25, 827099), (35, 590785), (61, 338975), (65, 318115), (91, 227225), (149, 138775), (175, 118157), (305, 67795), (325, 63623), (427, 48425), (455, 45445), (745, 27755), (793, 26075), (1043, 19825), (1525, 13559), (1937, 10675), (2135, 9685), (2275, 9089), (3725, 5551), (3965, 5215)]