21394005

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:901

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 14531115

約数列:

[1, 3, 5, 15, 41, 43, 123, 129, 205, 215, 615, 645, 809, 1763, 2427, 4045, 5289, 8815, 12135, 26445, 33169, 34787, 99507, 104361, 165845, 173935, 497535, 521805, 1426267, 4278801, 7131335, 21394005]

約数ペア:

[(1, 21394005), (3, 7131335), (5, 4278801), (15, 1426267), (41, 521805), (43, 497535), (123, 173935), (129, 165845), (205, 104361), (215, 99507), (615, 34787), (645, 33169), (809, 26445), (1763, 12135), (2427, 8815), (4045, 5289)]