2019900640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{664441}}^1$

素因数の和:664475

約数の個数: 48

約数和(自身を含む): 5023181520

約数和(自身を除く): 3003280880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 664441, 1328882, 2657764, 3322205, 5315528, 6644410, 10631056, 12624379, 13288820, 21262112, 25248758, 26577640, 50497516, 53155280, 63121895, 100995032, 106310560, 126243790, 201990064, 252487580, 403980128, 504975160, 1009950320, 2019900640]

約数ペア:

[(1, 2019900640), (2, 1009950320), (4, 504975160), (5, 403980128), (8, 252487580), (10, 201990064), (16, 126243790), (19, 106310560), (20, 100995032), (32, 63121895), (38, 53155280), (40, 50497516), (76, 26577640), (80, 25248758), (95, 21262112), (152, 13288820), (160, 12624379), (190, 10631056), (304, 6644410), (380, 5315528), (608, 3322205), (760, 2657764), (1520, 1328882), (3040, 664441)]