21411420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{193}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 61696656

約数和(自身を除く): 40285236

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 193, 215, 258, 386, 430, 516, 579, 645, 772, 860, 965, 1158, 1290, 1849, 1930, 2316, 2580, 2895, 3698, 3860, 5547, 5790, 7396, 8299, 9245, 11094, 11580, 16598, 18490, 22188, 24897, 27735, 33196, 36980, 41495, 49794, 55470, 82990, 99588, 110940, 124485, 165980, 248970, 356857, 497940, 713714, 1070571, 1427428, 1784285, 2141142, 3568570, 4282284, 5352855, 7137140, 10705710, 21411420]

約数ペア:

[(1, 21411420), (2, 10705710), (3, 7137140), (4, 5352855), (5, 4282284), (6, 3568570), (10, 2141142), (12, 1784285), (15, 1427428), (20, 1070571), (30, 713714), (43, 497940), (60, 356857), (86, 248970), (129, 165980), (172, 124485), (193, 110940), (215, 99588), (258, 82990), (386, 55470), (430, 49794), (516, 41495), (579, 36980), (645, 33196), (772, 27735), (860, 24897), (965, 22188), (1158, 18490), (1290, 16598), (1849, 11580), (1930, 11094), (2316, 9245), (2580, 8299), (2895, 7396), (3698, 5790), (3860, 5547)]