72180620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{189949}}^1$

素因数の和:189977

約数の個数: 24

約数和(自身を含む): 159558000

約数和(自身を除く): 87377380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 189949, 379898, 759796, 949745, 1899490, 3609031, 3798980, 7218062, 14436124, 18045155, 36090310, 72180620]

約数ペア:

[(1, 72180620), (2, 36090310), (4, 18045155), (5, 14436124), (10, 7218062), (19, 3798980), (20, 3609031), (38, 1899490), (76, 949745), (95, 759796), (190, 379898), (380, 189949)]