90195920

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{6229}}^1$

素因数の和:6423

約数の個数: 40

約数和(自身を含む): 210897960

約数和(自身を除く): 120702040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 6229, 7240, 12458, 14480, 24916, 31145, 49832, 62290, 99664, 124580, 249160, 498320, 1127449, 2254898, 4509796, 5637245, 9019592, 11274490, 18039184, 22548980, 45097960, 90195920]

約数ペア:

[(1, 90195920), (2, 45097960), (4, 22548980), (5, 18039184), (8, 11274490), (10, 9019592), (16, 5637245), (20, 4509796), (40, 2254898), (80, 1127449), (181, 498320), (362, 249160), (724, 124580), (905, 99664), (1448, 62290), (1810, 49832), (2896, 31145), (3620, 24916), (6229, 14480), (7240, 12458)]