21292005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1019}}^1$

素因数の和:1233

約数の個数: 32

約数和(自身を含む): 39168000

約数和(自身を除く): 17875995

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 199, 597, 995, 1019, 1393, 2985, 3057, 4179, 5095, 6965, 7133, 15285, 20895, 21399, 35665, 106995, 202781, 608343, 1013905, 1419467, 3041715, 4258401, 7097335, 21292005]

約数ペア:

[(1, 21292005), (3, 7097335), (5, 4258401), (7, 3041715), (15, 1419467), (21, 1013905), (35, 608343), (105, 202781), (199, 106995), (597, 35665), (995, 21399), (1019, 20895), (1393, 15285), (2985, 7133), (3057, 6965), (4179, 5095)]