31720078

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 52778880

約数和(自身を除く): 21058802

約数列:

[1, 2, 13, 26, 67, 131, 134, 139, 262, 278, 871, 1703, 1742, 1807, 3406, 3614, 8777, 9313, 17554, 18209, 18626, 36418, 114101, 121069, 228202, 236717, 242138, 473434, 1220003, 2440006, 15860039, 31720078]

約数ペア:

[(1, 31720078), (2, 15860039), (13, 2440006), (26, 1220003), (67, 473434), (131, 242138), (134, 236717), (139, 228202), (262, 121069), (278, 114101), (871, 36418), (1703, 18626), (1742, 18209), (1807, 17554), (3406, 9313), (3614, 8777)]