31978233

素因数分解:

$3^4\times 7^3\times {\mathrm{1151}}^1$

素因数の和:1184

約数の個数: 40

約数和(自身を含む): 55756800

約数和(自身を除く): 23778567

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 1029, 1151, 1323, 3087, 3453, 3969, 8057, 9261, 10359, 24171, 27783, 31077, 56399, 72513, 93231, 169197, 217539, 394793, 507591, 652617, 1184379, 1522773, 3553137, 4568319, 10659411, 31978233]

約数ペア:

[(1, 31978233), (3, 10659411), (7, 4568319), (9, 3553137), (21, 1522773), (27, 1184379), (49, 652617), (63, 507591), (81, 394793), (147, 217539), (189, 169197), (343, 93231), (441, 72513), (567, 56399), (1029, 31077), (1151, 27783), (1323, 24171), (3087, 10359), (3453, 9261), (3969, 8057)]