18712071

素因数分解:

$3^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{281}}^1$

素因数の和:452

約数の個数: 36

約数和(自身を含む): 31762224

約数和(自身を除く): 13050153

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 151, 281, 441, 453, 843, 1057, 1359, 1967, 2529, 3171, 5901, 7399, 9513, 13769, 17703, 22197, 41307, 42431, 66591, 123921, 127293, 297017, 381879, 891051, 2079119, 2673153, 6237357, 18712071]

約数ペア:

[(1, 18712071), (3, 6237357), (7, 2673153), (9, 2079119), (21, 891051), (49, 381879), (63, 297017), (147, 127293), (151, 123921), (281, 66591), (441, 42431), (453, 41307), (843, 22197), (1057, 17703), (1359, 13769), (1967, 9513), (2529, 7399), (3171, 5901)]