21954020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1367}}^1$

素因数の和:1460

約数の個数: 48

約数和(自身を含む): 51020928

約数和(自身を除く): 29066908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1367, 1460, 1606, 2734, 3212, 4015, 5468, 6835, 8030, 13670, 15037, 16060, 27340, 30074, 60148, 75185, 99791, 150370, 199582, 300740, 399164, 498955, 997910, 1097701, 1995820, 2195402, 4390804, 5488505, 10977010, 21954020]

約数ペア:

[(1, 21954020), (2, 10977010), (4, 5488505), (5, 4390804), (10, 2195402), (11, 1995820), (20, 1097701), (22, 997910), (44, 498955), (55, 399164), (73, 300740), (110, 199582), (146, 150370), (220, 99791), (292, 75185), (365, 60148), (730, 30074), (803, 27340), (1367, 16060), (1460, 15037), (1606, 13670), (2734, 8030), (3212, 6835), (4015, 5468)]