20542150

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 40890240

約数和(自身を除く): 20348090

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 145, 155, 290, 310, 457, 725, 775, 899, 914, 1450, 1550, 1798, 2285, 4495, 4570, 8990, 11425, 13253, 14167, 22475, 22850, 26506, 28334, 44950, 66265, 70835, 132530, 141670, 331325, 354175, 410843, 662650, 708350, 821686, 2054215, 4108430, 10271075, 20542150]

約数ペア:

[(1, 20542150), (2, 10271075), (5, 4108430), (10, 2054215), (25, 821686), (29, 708350), (31, 662650), (50, 410843), (58, 354175), (62, 331325), (145, 141670), (155, 132530), (290, 70835), (310, 66265), (457, 44950), (725, 28334), (775, 26506), (899, 22850), (914, 22475), (1450, 14167), (1550, 13253), (1798, 11425), (2285, 8990), (4495, 4570)]