21347775

素因数分解:

$3^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1201}}^1$

素因数の和:1296

約数の個数: 36

約数和(自身を含む): 38752480

約数和(自身を除く): 17404705

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 79, 225, 237, 395, 711, 1185, 1201, 1975, 3555, 3603, 5925, 6005, 10809, 17775, 18015, 30025, 54045, 90075, 94879, 270225, 284637, 474395, 853911, 1423185, 2371975, 4269555, 7115925, 21347775]

約数ペア:

[(1, 21347775), (3, 7115925), (5, 4269555), (9, 2371975), (15, 1423185), (25, 853911), (45, 474395), (75, 284637), (79, 270225), (225, 94879), (237, 90075), (395, 54045), (711, 30025), (1185, 18015), (1201, 17775), (1975, 10809), (3555, 6005), (3603, 5925)]