18889647

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 31606272

約数和(自身を除く): 12716625

約数列:

[1, 3, 7, 21, 23, 37, 49, 69, 111, 147, 151, 161, 259, 453, 483, 777, 851, 1057, 1127, 1813, 2553, 3171, 3381, 3473, 5439, 5587, 5957, 7399, 10419, 16761, 17871, 22197, 24311, 39109, 41699, 72933, 117327, 125097, 128501, 170177, 273763, 385503, 510531, 821289, 899507, 2698521, 6296549, 18889647]

約数ペア:

[(1, 18889647), (3, 6296549), (7, 2698521), (21, 899507), (23, 821289), (37, 510531), (49, 385503), (69, 273763), (111, 170177), (147, 128501), (151, 125097), (161, 117327), (259, 72933), (453, 41699), (483, 39109), (777, 24311), (851, 22197), (1057, 17871), (1127, 16761), (1813, 10419), (2553, 7399), (3171, 5957), (3381, 5587), (3473, 5439)]