31612900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1045

約数の個数: 72

約数和(自身を含む): 77495040

約数和(自身を除く): 45882140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 100, 110, 116, 145, 220, 275, 290, 319, 550, 580, 638, 725, 991, 1100, 1276, 1450, 1595, 1982, 2900, 3190, 3964, 4955, 6380, 7975, 9910, 10901, 15950, 19820, 21802, 24775, 28739, 31900, 43604, 49550, 54505, 57478, 99100, 109010, 114956, 143695, 218020, 272525, 287390, 316129, 545050, 574780, 632258, 718475, 1090100, 1264516, 1436950, 1580645, 2873900, 3161290, 6322580, 7903225, 15806450, 31612900]

約数ペア:

[(1, 31612900), (2, 15806450), (4, 7903225), (5, 6322580), (10, 3161290), (11, 2873900), (20, 1580645), (22, 1436950), (25, 1264516), (29, 1090100), (44, 718475), (50, 632258), (55, 574780), (58, 545050), (100, 316129), (110, 287390), (116, 272525), (145, 218020), (220, 143695), (275, 114956), (290, 109010), (319, 99100), (550, 57478), (580, 54505), (638, 49550), (725, 43604), (991, 31900), (1100, 28739), (1276, 24775), (1450, 21802), (1595, 19820), (1982, 15950), (2900, 10901), (3190, 9910), (3964, 7975), (4955, 6380)]