20451390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1627}}^1$

素因数の和:2056

約数の個数: 32

約数和(自身を含む): 49230720

約数和(自身を除く): 28779330

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 419, 838, 1257, 1627, 2095, 2514, 3254, 4190, 4881, 6285, 8135, 9762, 12570, 16270, 24405, 48810, 681713, 1363426, 2045139, 3408565, 4090278, 6817130, 10225695, 20451390]

約数ペア:

[(1, 20451390), (2, 10225695), (3, 6817130), (5, 4090278), (6, 3408565), (10, 2045139), (15, 1363426), (30, 681713), (419, 48810), (838, 24405), (1257, 16270), (1627, 12570), (2095, 9762), (2514, 8135), (3254, 6285), (4190, 4881)]