21377320

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7321}}^1$

素因数の和:7405

約数の個数: 32

約数和(自身を含む): 48764520

約数和(自身を除く): 27387200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7321, 14642, 29284, 36605, 58568, 73210, 146420, 292840, 534433, 1068866, 2137732, 2672165, 4275464, 5344330, 10688660, 21377320]

約数ペア:

[(1, 21377320), (2, 10688660), (4, 5344330), (5, 4275464), (8, 2672165), (10, 2137732), (20, 1068866), (40, 534433), (73, 292840), (146, 146420), (292, 73210), (365, 58568), (584, 36605), (730, 29284), (1460, 14642), (2920, 7321)]