28697980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{75521}}^1$

素因数の和:75549

約数の個数: 24

約数和(自身を含む): 63438480

約数和(自身を除く): 34740500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 75521, 151042, 302084, 377605, 755210, 1434899, 1510420, 2869798, 5739596, 7174495, 14348990, 28697980]

約数ペア:

[(1, 28697980), (2, 14348990), (4, 7174495), (5, 5739596), (10, 2869798), (19, 1510420), (20, 1434899), (38, 755210), (76, 377605), (95, 302084), (190, 151042), (380, 75521)]