19815472

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:565

約数の個数: 40

約数和(自身を含む): 40952736

約数和(自身を除く): 21137264

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 263, 272, 277, 526, 554, 1052, 1108, 2104, 2216, 4208, 4432, 4471, 4709, 8942, 9418, 17884, 18836, 35768, 37672, 71536, 72851, 75344, 145702, 291404, 582808, 1165616, 1238467, 2476934, 4953868, 9907736, 19815472]

約数ペア:

[(1, 19815472), (2, 9907736), (4, 4953868), (8, 2476934), (16, 1238467), (17, 1165616), (34, 582808), (68, 291404), (136, 145702), (263, 75344), (272, 72851), (277, 71536), (526, 37672), (554, 35768), (1052, 18836), (1108, 17884), (2104, 9418), (2216, 8942), (4208, 4709), (4432, 4471)]