139747880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{49207}}^1$

素因数の和:49289

約数の個数: 32

約数和(自身を含む): 318867840

約数和(自身を除く): 179119960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 49207, 98414, 196828, 246035, 393656, 492070, 984140, 1968280, 3493697, 6987394, 13974788, 17468485, 27949576, 34936970, 69873940, 139747880]

約数ペア:

[(1, 139747880), (2, 69873940), (4, 34936970), (5, 27949576), (8, 17468485), (10, 13974788), (20, 6987394), (40, 3493697), (71, 1968280), (142, 984140), (284, 492070), (355, 393656), (568, 246035), (710, 196828), (1420, 98414), (2840, 49207)]