20389250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 44568576

約数和(自身を除く): 24179326

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 61, 70, 122, 125, 175, 191, 250, 305, 350, 382, 427, 610, 854, 875, 955, 1337, 1525, 1750, 1910, 2135, 2674, 3050, 4270, 4775, 6685, 7625, 9550, 10675, 11651, 13370, 15250, 21350, 23302, 23875, 33425, 47750, 53375, 58255, 66850, 81557, 106750, 116510, 163114, 167125, 291275, 334250, 407785, 582550, 815570, 1456375, 2038925, 2912750, 4077850, 10194625, 20389250]

約数ペア:

[(1, 20389250), (2, 10194625), (5, 4077850), (7, 2912750), (10, 2038925), (14, 1456375), (25, 815570), (35, 582550), (50, 407785), (61, 334250), (70, 291275), (122, 167125), (125, 163114), (175, 116510), (191, 106750), (250, 81557), (305, 66850), (350, 58255), (382, 53375), (427, 47750), (610, 33425), (854, 23875), (875, 23302), (955, 21350), (1337, 15250), (1525, 13370), (1750, 11651), (1910, 10675), (2135, 9550), (2674, 7625), (3050, 6685), (4270, 4775)]