28013980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73721}}^1$

素因数の和:73749

約数の個数: 24

約数和(自身を含む): 61926480

約数和(自身を除く): 33912500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 73721, 147442, 294884, 368605, 737210, 1400699, 1474420, 2801398, 5602796, 7003495, 14006990, 28013980]

約数ペア:

[(1, 28013980), (2, 14006990), (4, 7003495), (5, 5602796), (10, 2801398), (19, 1474420), (20, 1400699), (38, 737210), (76, 368605), (95, 294884), (190, 147442), (380, 73721)]