21018140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7349}}^1$

素因数の和:7382

約数の個数: 48

約数和(自身を含む): 51861600

約数和(自身を除く): 30843460

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7349, 14698, 29396, 36745, 73490, 80839, 95537, 146980, 161678, 191074, 323356, 382148, 404195, 477685, 808390, 955370, 1050907, 1616780, 1910740, 2101814, 4203628, 5254535, 10509070, 21018140]

約数ペア:

[(1, 21018140), (2, 10509070), (4, 5254535), (5, 4203628), (10, 2101814), (11, 1910740), (13, 1616780), (20, 1050907), (22, 955370), (26, 808390), (44, 477685), (52, 404195), (55, 382148), (65, 323356), (110, 191074), (130, 161678), (143, 146980), (220, 95537), (260, 80839), (286, 73490), (572, 36745), (715, 29396), (1430, 14698), (2860, 7349)]