399165715

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1\times {\mathrm{577}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 536014080

約数和(自身を除く): 136848365

約数列:

[1, 5, 13, 29, 65, 145, 367, 377, 577, 1835, 1885, 2885, 4771, 7501, 10643, 16733, 23855, 37505, 53215, 83665, 138359, 211759, 217529, 691795, 1058795, 1087645, 2752867, 6141011, 13764335, 30705055, 79833143, 399165715]

約数ペア:

[(1, 399165715), (5, 79833143), (13, 30705055), (29, 13764335), (65, 6141011), (145, 2752867), (367, 1087645), (377, 1058795), (577, 691795), (1835, 217529), (1885, 211759), (2885, 138359), (4771, 83665), (7501, 53215), (10643, 37505), (16733, 23855)]