20019195

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1297}}^1$

素因数の和:1329

約数の個数: 48

約数和(自身を含む): 40497600

約数和(自身を除く): 20478405

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1297, 1715, 2205, 3087, 3891, 5145, 6485, 9079, 11673, 15435, 19455, 27237, 45395, 58365, 63553, 81711, 136185, 190659, 317765, 408555, 444871, 571977, 953295, 1334613, 2224355, 2859885, 4003839, 6673065, 20019195]

約数ペア:

[(1, 20019195), (3, 6673065), (5, 4003839), (7, 2859885), (9, 2224355), (15, 1334613), (21, 953295), (35, 571977), (45, 444871), (49, 408555), (63, 317765), (105, 190659), (147, 136185), (245, 81711), (315, 63553), (343, 58365), (441, 45395), (735, 27237), (1029, 19455), (1297, 15435), (1715, 11673), (2205, 9079), (3087, 6485), (3891, 5145)]