20823008

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 48

約数和(自身を含む): 43187760

約数和(自身を除く): 22364752

約数列:

[1, 2, 4, 8, 16, 32, 37, 43, 74, 86, 148, 172, 296, 344, 409, 592, 688, 818, 1184, 1376, 1591, 1636, 3182, 3272, 6364, 6544, 12728, 13088, 15133, 17587, 25456, 30266, 35174, 50912, 60532, 70348, 121064, 140696, 242128, 281392, 484256, 562784, 650719, 1301438, 2602876, 5205752, 10411504, 20823008]

約数ペア:

[(1, 20823008), (2, 10411504), (4, 5205752), (8, 2602876), (16, 1301438), (32, 650719), (37, 562784), (43, 484256), (74, 281392), (86, 242128), (148, 140696), (172, 121064), (296, 70348), (344, 60532), (409, 50912), (592, 35174), (688, 30266), (818, 25456), (1184, 17587), (1376, 15133), (1591, 13088), (1636, 12728), (3182, 6544), (3272, 6364)]