28402520

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3923}}^1$

素因数の和:4115

約数の個数: 32

約数和(自身を含む): 64275120

約数和(自身を除く): 35872600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 3923, 7240, 7846, 15692, 19615, 31384, 39230, 78460, 156920, 710063, 1420126, 2840252, 3550315, 5680504, 7100630, 14201260, 28402520]

約数ペア:

[(1, 28402520), (2, 14201260), (4, 7100630), (5, 5680504), (8, 3550315), (10, 2840252), (20, 1420126), (40, 710063), (181, 156920), (362, 78460), (724, 39230), (905, 31384), (1448, 19615), (1810, 15692), (3620, 7846), (3923, 7240)]