19901408

素因数分解:

$2^5\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20741152

約数列:

[1, 2, 4, 8, 16, 32, 59, 83, 118, 127, 166, 236, 254, 332, 472, 508, 664, 944, 1016, 1328, 1888, 2032, 2656, 4064, 4897, 7493, 9794, 10541, 14986, 19588, 21082, 29972, 39176, 42164, 59944, 78352, 84328, 119888, 156704, 168656, 239776, 337312, 621919, 1243838, 2487676, 4975352, 9950704, 19901408]

約数ペア:

[(1, 19901408), (2, 9950704), (4, 4975352), (8, 2487676), (16, 1243838), (32, 621919), (59, 337312), (83, 239776), (118, 168656), (127, 156704), (166, 119888), (236, 84328), (254, 78352), (332, 59944), (472, 42164), (508, 39176), (664, 29972), (944, 21082), (1016, 19588), (1328, 14986), (1888, 10541), (2032, 9794), (2656, 7493), (4064, 4897)]