20289195

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 36796032

約数和(自身を除く): 16506837

約数列:

[1, 3, 5, 9, 15, 45, 47, 53, 141, 159, 181, 235, 265, 423, 477, 543, 705, 795, 905, 1629, 2115, 2385, 2491, 2715, 7473, 8145, 8507, 9593, 12455, 22419, 25521, 28779, 37365, 42535, 47965, 76563, 86337, 112095, 127605, 143895, 382815, 431685, 450871, 1352613, 2254355, 4057839, 6763065, 20289195]

約数ペア:

[(1, 20289195), (3, 6763065), (5, 4057839), (9, 2254355), (15, 1352613), (45, 450871), (47, 431685), (53, 382815), (141, 143895), (159, 127605), (181, 112095), (235, 86337), (265, 76563), (423, 47965), (477, 42535), (543, 37365), (705, 28779), (795, 25521), (905, 22419), (1629, 12455), (2115, 9593), (2385, 8507), (2491, 8145), (2715, 7473)]