21246190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1181}}^1$

素因数の和:1452

約数の個数: 32

約数和(自身を含む): 43913664

約数和(自身を除く): 22667474

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1181, 1285, 1799, 2362, 2570, 3598, 5905, 8267, 8995, 11810, 16534, 17990, 41335, 82670, 303517, 607034, 1517585, 2124619, 3035170, 4249238, 10623095, 21246190]

約数ペア:

[(1, 21246190), (2, 10623095), (5, 4249238), (7, 3035170), (10, 2124619), (14, 1517585), (35, 607034), (70, 303517), (257, 82670), (514, 41335), (1181, 17990), (1285, 16534), (1799, 11810), (2362, 8995), (2570, 8267), (3598, 5905)]