201438520

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{27823}}^1$

素因数の和:28015

約数の個数: 32

約数和(自身を含む): 455757120

約数和(自身を除く): 254318600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 27823, 55646, 111292, 139115, 222584, 278230, 556460, 1112920, 5035963, 10071926, 20143852, 25179815, 40287704, 50359630, 100719260, 201438520]

約数ペア:

[(1, 201438520), (2, 100719260), (4, 50359630), (5, 40287704), (8, 25179815), (10, 20143852), (20, 10071926), (40, 5035963), (181, 1112920), (362, 556460), (724, 278230), (905, 222584), (1448, 139115), (1810, 111292), (3620, 55646), (7240, 27823)]