21052020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 65028096

約数和(自身を除く): 43976076

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 167, 191, 220, 330, 334, 382, 501, 573, 660, 668, 764, 835, 955, 1002, 1146, 1670, 1837, 1910, 2004, 2101, 2292, 2505, 2865, 3340, 3674, 3820, 4202, 5010, 5511, 5730, 6303, 7348, 8404, 9185, 10020, 10505, 11022, 11460, 12606, 18370, 21010, 22044, 25212, 27555, 31515, 31897, 36740, 42020, 55110, 63030, 63794, 95691, 110220, 126060, 127588, 159485, 191382, 318970, 350867, 382764, 478455, 637940, 701734, 956910, 1052601, 1403468, 1754335, 1913820, 2105202, 3508670, 4210404, 5263005, 7017340, 10526010, 21052020]

約数ペア:

[(1, 21052020), (2, 10526010), (3, 7017340), (4, 5263005), (5, 4210404), (6, 3508670), (10, 2105202), (11, 1913820), (12, 1754335), (15, 1403468), (20, 1052601), (22, 956910), (30, 701734), (33, 637940), (44, 478455), (55, 382764), (60, 350867), (66, 318970), (110, 191382), (132, 159485), (165, 127588), (167, 126060), (191, 110220), (220, 95691), (330, 63794), (334, 63030), (382, 55110), (501, 42020), (573, 36740), (660, 31897), (668, 31515), (764, 27555), (835, 25212), (955, 22044), (1002, 21010), (1146, 18370), (1670, 12606), (1837, 11460), (1910, 11022), (2004, 10505), (2101, 10020), (2292, 9185), (2505, 8404), (2865, 7348), (3340, 6303), (3674, 5730), (3820, 5511), (4202, 5010)]