31515813

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{233}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 55486080

約数和(自身を除く): 23970267

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 113, 133, 171, 233, 339, 399, 699, 791, 1017, 1197, 1631, 2097, 2147, 2373, 4427, 4893, 6441, 7119, 13281, 14679, 15029, 19323, 26329, 30989, 39843, 45087, 78987, 92967, 135261, 184303, 236961, 278901, 500251, 552909, 1500753, 1658727, 3501757, 4502259, 10505271, 31515813]

約数ペア:

[(1, 31515813), (3, 10505271), (7, 4502259), (9, 3501757), (19, 1658727), (21, 1500753), (57, 552909), (63, 500251), (113, 278901), (133, 236961), (171, 184303), (233, 135261), (339, 92967), (399, 78987), (699, 45087), (791, 39843), (1017, 30989), (1197, 26329), (1631, 19323), (2097, 15029), (2147, 14679), (2373, 13281), (4427, 7119), (4893, 6441)]