21055530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 52462080

約数和(自身を除く): 31406550

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 94, 109, 137, 141, 218, 235, 274, 282, 327, 411, 470, 545, 654, 685, 705, 822, 1090, 1370, 1410, 1635, 2055, 3270, 4110, 5123, 6439, 10246, 12878, 14933, 15369, 19317, 25615, 29866, 30738, 32195, 38634, 44799, 51230, 64390, 74665, 76845, 89598, 96585, 149330, 153690, 193170, 223995, 447990, 701851, 1403702, 2105553, 3509255, 4211106, 7018510, 10527765, 21055530]

約数ペア:

[(1, 21055530), (2, 10527765), (3, 7018510), (5, 4211106), (6, 3509255), (10, 2105553), (15, 1403702), (30, 701851), (47, 447990), (94, 223995), (109, 193170), (137, 153690), (141, 149330), (218, 96585), (235, 89598), (274, 76845), (282, 74665), (327, 64390), (411, 51230), (470, 44799), (545, 38634), (654, 32195), (685, 30738), (705, 29866), (822, 25615), (1090, 19317), (1370, 15369), (1410, 14933), (1635, 12878), (2055, 10246), (3270, 6439), (4110, 5123)]