20415171

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 11873085

約数列:

[1, 3, 7, 21, 41, 123, 131, 181, 287, 393, 543, 861, 917, 1267, 2751, 3801, 5371, 7421, 16113, 22263, 23711, 37597, 51947, 71133, 112791, 155841, 165977, 497931, 972151, 2916453, 6805057, 20415171]

約数ペア:

[(1, 20415171), (3, 6805057), (7, 2916453), (21, 972151), (41, 497931), (123, 165977), (131, 155841), (181, 112791), (287, 71133), (393, 51947), (543, 37597), (861, 23711), (917, 22263), (1267, 16113), (2751, 7421), (3801, 5371)]