251001640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{601}}^1$

素因数の和:862

約数の個数: 64

約数和(自身を含む): 579292560

約数和(自身を除く): 328290920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 197, 212, 265, 394, 424, 530, 601, 788, 985, 1060, 1202, 1576, 1970, 2120, 2404, 3005, 3940, 4808, 6010, 7880, 10441, 12020, 20882, 24040, 31853, 41764, 52205, 63706, 83528, 104410, 118397, 127412, 159265, 208820, 236794, 254824, 318530, 417640, 473588, 591985, 637060, 947176, 1183970, 1274120, 2367940, 4735880, 6275041, 12550082, 25100164, 31375205, 50200328, 62750410, 125500820, 251001640]

約数ペア:

[(1, 251001640), (2, 125500820), (4, 62750410), (5, 50200328), (8, 31375205), (10, 25100164), (20, 12550082), (40, 6275041), (53, 4735880), (106, 2367940), (197, 1274120), (212, 1183970), (265, 947176), (394, 637060), (424, 591985), (530, 473588), (601, 417640), (788, 318530), (985, 254824), (1060, 236794), (1202, 208820), (1576, 159265), (1970, 127412), (2120, 118397), (2404, 104410), (3005, 83528), (3940, 63706), (4808, 52205), (6010, 41764), (7880, 31853), (10441, 24040), (12020, 20882)]