278694580

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^2\times {\mathrm{1481}}^1$

素因数の和:1684

約数の個数: 36

約数和(自身を含む): 591753708

約数和(自身を除く): 313059128

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1481, 1940, 2962, 5924, 7405, 9409, 14810, 18818, 29620, 37636, 47045, 94090, 143657, 188180, 287314, 574628, 718285, 1436570, 2873140, 13934729, 27869458, 55738916, 69673645, 139347290, 278694580]

約数ペア:

[(1, 278694580), (2, 139347290), (4, 69673645), (5, 55738916), (10, 27869458), (20, 13934729), (97, 2873140), (194, 1436570), (388, 718285), (485, 574628), (970, 287314), (1481, 188180), (1940, 143657), (2962, 94090), (5924, 47045), (7405, 37636), (9409, 29620), (14810, 18818)]