31307805

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 56609280

約数和(自身を除く): 25301475

約数列:

[1, 3, 5, 9, 15, 41, 45, 71, 123, 205, 213, 239, 355, 369, 615, 639, 717, 1065, 1195, 1845, 2151, 2911, 3195, 3585, 8733, 9799, 10755, 14555, 16969, 26199, 29397, 43665, 48995, 50907, 84845, 88191, 130995, 146985, 152721, 254535, 440955, 695729, 763605, 2087187, 3478645, 6261561, 10435935, 31307805]

約数ペア:

[(1, 31307805), (3, 10435935), (5, 6261561), (9, 3478645), (15, 2087187), (41, 763605), (45, 695729), (71, 440955), (123, 254535), (205, 152721), (213, 146985), (239, 130995), (355, 88191), (369, 84845), (615, 50907), (639, 48995), (717, 43665), (1065, 29397), (1195, 26199), (1845, 16969), (2151, 14555), (2911, 10755), (3195, 9799), (3585, 8733)]