20870418

素因数分解:

$2^1\times 3^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 42854400

約数和(自身を除く): 21983982

約数列:

[1, 2, 3, 6, 61, 122, 127, 183, 254, 366, 381, 449, 762, 898, 1347, 2694, 7747, 15494, 23241, 27389, 46482, 54778, 57023, 82167, 114046, 164334, 171069, 342138, 3478403, 6956806, 10435209, 20870418]

約数ペア:

[(1, 20870418), (2, 10435209), (3, 6956806), (6, 3478403), (61, 342138), (122, 171069), (127, 164334), (183, 114046), (254, 82167), (366, 57023), (381, 54778), (449, 46482), (762, 27389), (898, 23241), (1347, 15494), (2694, 7747)]