21158320

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3623}}^1$

素因数の和:3709

約数の個数: 40

約数和(自身を含む): 49880736

約数和(自身を除く): 28722416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3623, 5840, 7246, 14492, 18115, 28984, 36230, 57968, 72460, 144920, 264479, 289840, 528958, 1057916, 1322395, 2115832, 2644790, 4231664, 5289580, 10579160, 21158320]

約数ペア:

[(1, 21158320), (2, 10579160), (4, 5289580), (5, 4231664), (8, 2644790), (10, 2115832), (16, 1322395), (20, 1057916), (40, 528958), (73, 289840), (80, 264479), (146, 144920), (292, 72460), (365, 57968), (584, 36230), (730, 28984), (1168, 18115), (1460, 14492), (2920, 7246), (3623, 5840)]