20791100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 72

約数和(自身を含む): 50528016

約数和(自身を除く): 29736916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 461, 550, 820, 902, 922, 1025, 1100, 1804, 1844, 2050, 2255, 2305, 4100, 4510, 4610, 5071, 9020, 9220, 10142, 11275, 11525, 18901, 20284, 22550, 23050, 25355, 37802, 45100, 46100, 50710, 75604, 94505, 101420, 126775, 189010, 207911, 253550, 378020, 415822, 472525, 507100, 831644, 945050, 1039555, 1890100, 2079110, 4158220, 5197775, 10395550, 20791100]

約数ペア:

[(1, 20791100), (2, 10395550), (4, 5197775), (5, 4158220), (10, 2079110), (11, 1890100), (20, 1039555), (22, 945050), (25, 831644), (41, 507100), (44, 472525), (50, 415822), (55, 378020), (82, 253550), (100, 207911), (110, 189010), (164, 126775), (205, 101420), (220, 94505), (275, 75604), (410, 50710), (451, 46100), (461, 45100), (550, 37802), (820, 25355), (902, 23050), (922, 22550), (1025, 20284), (1100, 18901), (1804, 11525), (1844, 11275), (2050, 10142), (2255, 9220), (2305, 9020), (4100, 5071), (4510, 4610)]