21525416

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 45637620

約数和(自身を除く): 24112204

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 121, 148, 242, 296, 407, 484, 601, 814, 968, 1202, 1628, 2404, 3256, 4477, 4808, 6611, 8954, 13222, 17908, 22237, 26444, 35816, 44474, 52888, 72721, 88948, 145442, 177896, 244607, 290884, 489214, 581768, 978428, 1956856, 2690677, 5381354, 10762708, 21525416]

約数ペア:

[(1, 21525416), (2, 10762708), (4, 5381354), (8, 2690677), (11, 1956856), (22, 978428), (37, 581768), (44, 489214), (74, 290884), (88, 244607), (121, 177896), (148, 145442), (242, 88948), (296, 72721), (407, 52888), (484, 44474), (601, 35816), (814, 26444), (968, 22237), (1202, 17908), (1628, 13222), (2404, 8954), (3256, 6611), (4477, 4808)]