21080040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1811}}^1$

素因数の和:1922

約数の個数: 64

約数和(自身を含む): 63927360

約数和(自身を除く): 42847320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 194, 291, 388, 485, 582, 776, 970, 1164, 1455, 1811, 1940, 2328, 2910, 3622, 3880, 5433, 5820, 7244, 9055, 10866, 11640, 14488, 18110, 21732, 27165, 36220, 43464, 54330, 72440, 108660, 175667, 217320, 351334, 527001, 702668, 878335, 1054002, 1405336, 1756670, 2108004, 2635005, 3513340, 4216008, 5270010, 7026680, 10540020, 21080040]

約数ペア:

[(1, 21080040), (2, 10540020), (3, 7026680), (4, 5270010), (5, 4216008), (6, 3513340), (8, 2635005), (10, 2108004), (12, 1756670), (15, 1405336), (20, 1054002), (24, 878335), (30, 702668), (40, 527001), (60, 351334), (97, 217320), (120, 175667), (194, 108660), (291, 72440), (388, 54330), (485, 43464), (582, 36220), (776, 27165), (970, 21732), (1164, 18110), (1455, 14488), (1811, 11640), (1940, 10866), (2328, 9055), (2910, 7244), (3622, 5820), (3880, 5433)]