21370005

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15319}}^1$

素因数の和:15361

約数の個数: 24

約数和(自身を含む): 38238720

約数和(自身を除く): 16868715

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15319, 45957, 76595, 137871, 229785, 474889, 689355, 1424667, 2374445, 4274001, 7123335, 21370005]

約数ペア:

[(1, 21370005), (3, 7123335), (5, 4274001), (9, 2374445), (15, 1424667), (31, 689355), (45, 474889), (93, 229785), (155, 137871), (279, 76595), (465, 45957), (1395, 15319)]