21103760

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1747}}^1$

素因数の和:1911

約数の個数: 40

約数和(自身を含む): 49419456

約数和(自身を除く): 28315696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1747, 2416, 3020, 3494, 6040, 6988, 8735, 12080, 13976, 17470, 27952, 34940, 69880, 139760, 263797, 527594, 1055188, 1318985, 2110376, 2637970, 4220752, 5275940, 10551880, 21103760]

約数ペア:

[(1, 21103760), (2, 10551880), (4, 5275940), (5, 4220752), (8, 2637970), (10, 2110376), (16, 1318985), (20, 1055188), (40, 527594), (80, 263797), (151, 139760), (302, 69880), (604, 34940), (755, 27952), (1208, 17470), (1510, 13976), (1747, 12080), (2416, 8735), (3020, 6988), (3494, 6040)]