19443020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 42378336

約数和(自身を除く): 22935316

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 131, 164, 181, 205, 262, 362, 410, 524, 655, 724, 820, 905, 1310, 1810, 2620, 3620, 5371, 7421, 10742, 14842, 21484, 23711, 26855, 29684, 37105, 47422, 53710, 74210, 94844, 107420, 118555, 148420, 237110, 474220, 972151, 1944302, 3888604, 4860755, 9721510, 19443020]

約数ペア:

[(1, 19443020), (2, 9721510), (4, 4860755), (5, 3888604), (10, 1944302), (20, 972151), (41, 474220), (82, 237110), (131, 148420), (164, 118555), (181, 107420), (205, 94844), (262, 74210), (362, 53710), (410, 47422), (524, 37105), (655, 29684), (724, 26855), (820, 23711), (905, 21484), (1310, 14842), (1810, 10742), (2620, 7421), (3620, 5371)]