20643010

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:898

約数の個数: 32

約数和(自身を含む): 38693952

約数和(自身を除く): 18050942

約数列:

[1, 2, 5, 10, 43, 61, 86, 122, 215, 305, 430, 610, 787, 1574, 2623, 3935, 5246, 7870, 13115, 26230, 33841, 48007, 67682, 96014, 169205, 240035, 338410, 480070, 2064301, 4128602, 10321505, 20643010]

約数ペア:

[(1, 20643010), (2, 10321505), (5, 4128602), (10, 2064301), (43, 480070), (61, 338410), (86, 240035), (122, 169205), (215, 96014), (305, 67682), (430, 48007), (610, 33841), (787, 26230), (1574, 13115), (2623, 7870), (3935, 5246)]