20398100

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^2\times {\mathrm{149}}^1$

素因数の和:237

約数の個数: 54

約数和(自身を含む): 45797850

約数和(自身を除く): 25399750

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 149, 185, 298, 370, 596, 740, 745, 925, 1369, 1490, 1850, 2738, 2980, 3700, 3725, 5476, 5513, 6845, 7450, 11026, 13690, 14900, 22052, 27380, 27565, 34225, 55130, 68450, 110260, 136900, 137825, 203981, 275650, 407962, 551300, 815924, 1019905, 2039810, 4079620, 5099525, 10199050, 20398100]

約数ペア:

[(1, 20398100), (2, 10199050), (4, 5099525), (5, 4079620), (10, 2039810), (20, 1019905), (25, 815924), (37, 551300), (50, 407962), (74, 275650), (100, 203981), (148, 137825), (149, 136900), (185, 110260), (298, 68450), (370, 55130), (596, 34225), (740, 27565), (745, 27380), (925, 22052), (1369, 14900), (1490, 13690), (1850, 11026), (2738, 7450), (2980, 6845), (3700, 5513), (3725, 5476)]