20784680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74231}}^1$

素因数の和:74249

約数の個数: 32

約数和(自身を含む): 53447040

約数和(自身を除く): 32662360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74231, 148462, 296924, 371155, 519617, 593848, 742310, 1039234, 1484620, 2078468, 2598085, 2969240, 4156936, 5196170, 10392340, 20784680]

約数ペア:

[(1, 20784680), (2, 10392340), (4, 5196170), (5, 4156936), (7, 2969240), (8, 2598085), (10, 2078468), (14, 1484620), (20, 1039234), (28, 742310), (35, 593848), (40, 519617), (56, 371155), (70, 296924), (140, 148462), (280, 74231)]