21221070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54413}}^1$

素因数の和:54436

約数の個数: 32

約数和(自身を含む): 54849312

約数和(自身を除く): 33628242

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54413, 108826, 163239, 272065, 326478, 544130, 707369, 816195, 1414738, 1632390, 2122107, 3536845, 4244214, 7073690, 10610535, 21221070]

約数ペア:

[(1, 21221070), (2, 10610535), (3, 7073690), (5, 4244214), (6, 3536845), (10, 2122107), (13, 1632390), (15, 1414738), (26, 816195), (30, 707369), (39, 544130), (65, 326478), (78, 272065), (130, 163239), (195, 108826), (390, 54413)]