278330440

素因数分解:

$2^3\times 5^1\times {\mathrm{6958261}}^1$

素因数の和:6958272

約数の個数: 16

約数和(自身を含む): 626243580

約数和(自身を除く): 347913140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6958261, 13916522, 27833044, 34791305, 55666088, 69582610, 139165220, 278330440]

約数ペア:

[(1, 278330440), (2, 139165220), (4, 69582610), (5, 55666088), (8, 34791305), (10, 27833044), (20, 13916522), (40, 6958261)]