21349515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2753}}^1$

素因数の和:2819

約数の個数: 32

約数和(自身を含む): 38071296

約数和(自身を除く): 16721781

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 517, 705, 1551, 2585, 2753, 7755, 8259, 13765, 30283, 41295, 90849, 129391, 151415, 388173, 454245, 646955, 1423301, 1940865, 4269903, 7116505, 21349515]

約数ペア:

[(1, 21349515), (3, 7116505), (5, 4269903), (11, 1940865), (15, 1423301), (33, 646955), (47, 454245), (55, 388173), (141, 151415), (165, 129391), (235, 90849), (517, 41295), (705, 30283), (1551, 13765), (2585, 8259), (2753, 7755)]