81210940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213713}}^1$

素因数の和:213741

約数の個数: 24

約数和(自身を含む): 179519760

約数和(自身を除く): 98308820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213713, 427426, 854852, 1068565, 2137130, 4060547, 4274260, 8121094, 16242188, 20302735, 40605470, 81210940]

約数ペア:

[(1, 81210940), (2, 40605470), (4, 20302735), (5, 16242188), (10, 8121094), (19, 4274260), (20, 4060547), (38, 2137130), (76, 1068565), (95, 854852), (190, 427426), (380, 213713)]