636405820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^2\times {\mathrm{149}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 1405756800

約数和(自身を除く): 769350980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 149, 155, 166, 298, 310, 332, 415, 596, 620, 745, 830, 1490, 1660, 2573, 2980, 4619, 5146, 6889, 9238, 10292, 12367, 12865, 13778, 18476, 23095, 24734, 25730, 27556, 34445, 46190, 49468, 51460, 61835, 68890, 92380, 123670, 137780, 213559, 247340, 383377, 427118, 766754, 854236, 1026461, 1067795, 1533508, 1916885, 2052922, 2135590, 3833770, 4105844, 4271180, 5132305, 7667540, 10264610, 20529220, 31820291, 63640582, 127281164, 159101455, 318202910, 636405820]

約数ペア:

[(1, 636405820), (2, 318202910), (4, 159101455), (5, 127281164), (10, 63640582), (20, 31820291), (31, 20529220), (62, 10264610), (83, 7667540), (124, 5132305), (149, 4271180), (155, 4105844), (166, 3833770), (298, 2135590), (310, 2052922), (332, 1916885), (415, 1533508), (596, 1067795), (620, 1026461), (745, 854236), (830, 766754), (1490, 427118), (1660, 383377), (2573, 247340), (2980, 213559), (4619, 137780), (5146, 123670), (6889, 92380), (9238, 68890), (10292, 61835), (12367, 51460), (12865, 49468), (13778, 46190), (18476, 34445), (23095, 27556), (24734, 25730)]