78698980

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{4003}}^1$

素因数の和:4995

約数の個数: 24

約数和(自身を含む): 165477312

約数和(自身を除く): 86778332

約数列:

[1, 2, 4, 5, 10, 20, 983, 1966, 3932, 4003, 4915, 8006, 9830, 16012, 19660, 20015, 40030, 80060, 3934949, 7869898, 15739796, 19674745, 39349490, 78698980]

約数ペア:

[(1, 78698980), (2, 39349490), (4, 19674745), (5, 15739796), (10, 7869898), (20, 3934949), (983, 80060), (1966, 40030), (3932, 20015), (4003, 19660), (4915, 16012), (8006, 9830)]