18967384

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 36867600

約数和(自身を除く): 17900216

約数列:

[1, 2, 4, 8, 37, 74, 139, 148, 278, 296, 461, 556, 922, 1112, 1844, 3688, 5143, 10286, 17057, 20572, 34114, 41144, 64079, 68228, 128158, 136456, 256316, 512632, 2370923, 4741846, 9483692, 18967384]

約数ペア:

[(1, 18967384), (2, 9483692), (4, 4741846), (8, 2370923), (37, 512632), (74, 256316), (139, 136456), (148, 128158), (278, 68228), (296, 64079), (461, 41144), (556, 34114), (922, 20572), (1112, 17057), (1844, 10286), (3688, 5143)]