21313845

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{953}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 42861312

約数和(自身を除く): 21547467

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 953, 1065, 1491, 2485, 2859, 3195, 4473, 4765, 6671, 7455, 8577, 14295, 20013, 22365, 33355, 42885, 60039, 67663, 100065, 202989, 300195, 338315, 473641, 608967, 1014945, 1420923, 2368205, 3044835, 4262769, 7104615, 21313845]

約数ペア:

[(1, 21313845), (3, 7104615), (5, 4262769), (7, 3044835), (9, 2368205), (15, 1420923), (21, 1014945), (35, 608967), (45, 473641), (63, 338315), (71, 300195), (105, 202989), (213, 100065), (315, 67663), (355, 60039), (497, 42885), (639, 33355), (953, 22365), (1065, 20013), (1491, 14295), (2485, 8577), (2859, 7455), (3195, 6671), (4473, 4765)]