20977220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{983}}^1$

素因数の和:1100

約数の個数: 48

約数和(自身を含む): 48601728

約数和(自身を除く): 27624508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 983, 1067, 1940, 1966, 2134, 3932, 4268, 4915, 5335, 9830, 10670, 10813, 19660, 21340, 21626, 43252, 54065, 95351, 108130, 190702, 216260, 381404, 476755, 953510, 1048861, 1907020, 2097722, 4195444, 5244305, 10488610, 20977220]

約数ペア:

[(1, 20977220), (2, 10488610), (4, 5244305), (5, 4195444), (10, 2097722), (11, 1907020), (20, 1048861), (22, 953510), (44, 476755), (55, 381404), (97, 216260), (110, 190702), (194, 108130), (220, 95351), (388, 54065), (485, 43252), (970, 21626), (983, 21340), (1067, 19660), (1940, 10813), (1966, 10670), (2134, 9830), (3932, 5335), (4268, 4915)]