20559220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{827}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 27014348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 827, 1130, 1243, 1654, 2260, 2486, 3308, 4135, 4972, 6215, 8270, 9097, 12430, 16540, 18194, 24860, 36388, 45485, 90970, 93451, 181940, 186902, 373804, 467255, 934510, 1027961, 1869020, 2055922, 4111844, 5139805, 10279610, 20559220]

約数ペア:

[(1, 20559220), (2, 10279610), (4, 5139805), (5, 4111844), (10, 2055922), (11, 1869020), (20, 1027961), (22, 934510), (44, 467255), (55, 373804), (110, 186902), (113, 181940), (220, 93451), (226, 90970), (452, 45485), (565, 36388), (827, 24860), (1130, 18194), (1243, 16540), (1654, 12430), (2260, 9097), (2486, 8270), (3308, 6215), (4135, 4972)]