20451180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1213}}^1$

素因数の和:1506

約数の個数: 48

約数和(自身を含む): 57514464

約数和(自身を除く): 37063284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 281, 562, 843, 1124, 1213, 1405, 1686, 2426, 2810, 3372, 3639, 4215, 4852, 5620, 6065, 7278, 8430, 12130, 14556, 16860, 18195, 24260, 36390, 72780, 340853, 681706, 1022559, 1363412, 1704265, 2045118, 3408530, 4090236, 5112795, 6817060, 10225590, 20451180]

約数ペア:

[(1, 20451180), (2, 10225590), (3, 6817060), (4, 5112795), (5, 4090236), (6, 3408530), (10, 2045118), (12, 1704265), (15, 1363412), (20, 1022559), (30, 681706), (60, 340853), (281, 72780), (562, 36390), (843, 24260), (1124, 18195), (1213, 16860), (1405, 14556), (1686, 12130), (2426, 8430), (2810, 7278), (3372, 6065), (3639, 5620), (4215, 4852)]