18439290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{971}}^1$

素因数の和:1195

約数の個数: 48

約数和(自身を含む): 48218976

約数和(自身を除く): 29779686

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 211, 422, 633, 971, 1055, 1266, 1899, 1942, 2110, 2913, 3165, 3798, 4855, 5826, 6330, 8739, 9495, 9710, 14565, 17478, 18990, 29130, 43695, 87390, 204881, 409762, 614643, 1024405, 1229286, 1843929, 2048810, 3073215, 3687858, 6146430, 9219645, 18439290]

約数ペア:

[(1, 18439290), (2, 9219645), (3, 6146430), (5, 3687858), (6, 3073215), (9, 2048810), (10, 1843929), (15, 1229286), (18, 1024405), (30, 614643), (45, 409762), (90, 204881), (211, 87390), (422, 43695), (633, 29130), (971, 18990), (1055, 17478), (1266, 14565), (1899, 9710), (1942, 9495), (2110, 8739), (2913, 6330), (3165, 5826), (3798, 4855)]