20921320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74719}}^1$

素因数の和:74737

約数の個数: 32

約数和(自身を含む): 53798400

約数和(自身を除く): 32877080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74719, 149438, 298876, 373595, 523033, 597752, 747190, 1046066, 1494380, 2092132, 2615165, 2988760, 4184264, 5230330, 10460660, 20921320]

約数ペア:

[(1, 20921320), (2, 10460660), (4, 5230330), (5, 4184264), (7, 2988760), (8, 2615165), (10, 2092132), (14, 1494380), (20, 1046066), (28, 747190), (35, 597752), (40, 523033), (56, 373595), (70, 298876), (140, 149438), (280, 74719)]