221377420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{3581}}^1$

素因数の和:3882

約数の個数: 48

約数和(自身を含む): 509102496

約数和(自身を除く): 287725076

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 281, 562, 1124, 1405, 2810, 3091, 3581, 5620, 6182, 7162, 12364, 14324, 15455, 17905, 30910, 35810, 39391, 61820, 71620, 78782, 157564, 196955, 393910, 787820, 1006261, 2012522, 4025044, 5031305, 10062610, 11068871, 20125220, 22137742, 44275484, 55344355, 110688710, 221377420]

約数ペア:

[(1, 221377420), (2, 110688710), (4, 55344355), (5, 44275484), (10, 22137742), (11, 20125220), (20, 11068871), (22, 10062610), (44, 5031305), (55, 4025044), (110, 2012522), (220, 1006261), (281, 787820), (562, 393910), (1124, 196955), (1405, 157564), (2810, 78782), (3091, 71620), (3581, 61820), (5620, 39391), (6182, 35810), (7162, 30910), (12364, 17905), (14324, 15455)]