277157020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{27883}}^1$

素因数の和:27970

約数の個数: 48

約数和(自身を含む): 674569728

約数和(自身を除く): 397412708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 27883, 55766, 111532, 139415, 195181, 278830, 390362, 557660, 780724, 975905, 1951810, 1979693, 3903620, 3959386, 7918772, 9898465, 13857851, 19796930, 27715702, 39593860, 55431404, 69289255, 138578510, 277157020]

約数ペア:

[(1, 277157020), (2, 138578510), (4, 69289255), (5, 55431404), (7, 39593860), (10, 27715702), (14, 19796930), (20, 13857851), (28, 9898465), (35, 7918772), (70, 3959386), (71, 3903620), (140, 1979693), (142, 1951810), (284, 975905), (355, 780724), (497, 557660), (710, 390362), (994, 278830), (1420, 195181), (1988, 139415), (2485, 111532), (4970, 55766), (9940, 27883)]