21414915

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 40279680

約数和(自身を除く): 18864765

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 53, 73, 123, 135, 159, 205, 219, 265, 365, 369, 477, 615, 657, 795, 1095, 1107, 1431, 1845, 1971, 2173, 2385, 2993, 3285, 3869, 5535, 6519, 7155, 8979, 9855, 10865, 11607, 14965, 19345, 19557, 26937, 32595, 34821, 44895, 58035, 58671, 80811, 97785, 104463, 134685, 158629, 174105, 293355, 404055, 475887, 522315, 793145, 1427661, 2379435, 4282983, 7138305, 21414915]

約数ペア:

[(1, 21414915), (3, 7138305), (5, 4282983), (9, 2379435), (15, 1427661), (27, 793145), (41, 522315), (45, 475887), (53, 404055), (73, 293355), (123, 174105), (135, 158629), (159, 134685), (205, 104463), (219, 97785), (265, 80811), (365, 58671), (369, 58035), (477, 44895), (615, 34821), (657, 32595), (795, 26937), (1095, 19557), (1107, 19345), (1431, 14965), (1845, 11607), (1971, 10865), (2173, 9855), (2385, 8979), (2993, 7155), (3285, 6519), (3869, 5535)]