21816390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13721}}^1$

素因数の和:13784

約数の個数: 32

約数和(自身を含む): 53351136

約数和(自身を除く): 31534746

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13721, 27442, 41163, 68605, 82326, 137210, 205815, 411630, 727213, 1454426, 2181639, 3636065, 4363278, 7272130, 10908195, 21816390]

約数ペア:

[(1, 21816390), (2, 10908195), (3, 7272130), (5, 4363278), (6, 3636065), (10, 2181639), (15, 1454426), (30, 727213), (53, 411630), (106, 205815), (159, 137210), (265, 82326), (318, 68605), (530, 41163), (795, 27442), (1590, 13721)]