19499740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2027}}^1$

素因数の和:2086

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 25813892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2027, 2405, 4054, 4810, 8108, 9620, 10135, 20270, 26351, 40540, 52702, 74999, 105404, 131755, 149998, 263510, 299996, 374995, 527020, 749990, 974987, 1499980, 1949974, 3899948, 4874935, 9749870, 19499740]

約数ペア:

[(1, 19499740), (2, 9749870), (4, 4874935), (5, 3899948), (10, 1949974), (13, 1499980), (20, 974987), (26, 749990), (37, 527020), (52, 374995), (65, 299996), (74, 263510), (130, 149998), (148, 131755), (185, 105404), (260, 74999), (370, 52702), (481, 40540), (740, 26351), (962, 20270), (1924, 10135), (2027, 9620), (2405, 8108), (4054, 4810)]