21440715

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2143}}^1$

素因数の和:2203

約数の個数: 32

約数和(自身を含む): 37048320

約数和(自身を除く): 15607605

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 345, 435, 667, 2001, 2143, 3335, 6429, 10005, 10715, 32145, 49289, 62147, 147867, 186441, 246445, 310735, 739335, 932205, 1429381, 4288143, 7146905, 21440715]

約数ペア:

[(1, 21440715), (3, 7146905), (5, 4288143), (15, 1429381), (23, 932205), (29, 739335), (69, 310735), (87, 246445), (115, 186441), (145, 147867), (345, 62147), (435, 49289), (667, 32145), (2001, 10715), (2143, 10005), (3335, 6429)]