21749420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{487}}^1$

素因数の和:543

約数の個数: 96

約数和(自身を含む): 59028480

約数和(自身を除く): 37279060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 55, 58, 70, 77, 110, 116, 140, 145, 154, 203, 220, 290, 308, 319, 385, 406, 487, 580, 638, 770, 812, 974, 1015, 1276, 1540, 1595, 1948, 2030, 2233, 2435, 3190, 3409, 4060, 4466, 4870, 5357, 6380, 6818, 8932, 9740, 10714, 11165, 13636, 14123, 17045, 21428, 22330, 26785, 28246, 34090, 37499, 44660, 53570, 56492, 68180, 70615, 74998, 98861, 107140, 141230, 149996, 155353, 187495, 197722, 282460, 310706, 374990, 395444, 494305, 621412, 749980, 776765, 988610, 1087471, 1553530, 1977220, 2174942, 3107060, 4349884, 5437355, 10874710, 21749420]

約数ペア:

[(1, 21749420), (2, 10874710), (4, 5437355), (5, 4349884), (7, 3107060), (10, 2174942), (11, 1977220), (14, 1553530), (20, 1087471), (22, 988610), (28, 776765), (29, 749980), (35, 621412), (44, 494305), (55, 395444), (58, 374990), (70, 310706), (77, 282460), (110, 197722), (116, 187495), (140, 155353), (145, 149996), (154, 141230), (203, 107140), (220, 98861), (290, 74998), (308, 70615), (319, 68180), (385, 56492), (406, 53570), (487, 44660), (580, 37499), (638, 34090), (770, 28246), (812, 26785), (974, 22330), (1015, 21428), (1276, 17045), (1540, 14123), (1595, 13636), (1948, 11165), (2030, 10714), (2233, 9740), (2435, 8932), (3190, 6818), (3409, 6380), (4060, 5357), (4466, 4870)]