20869240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1021}}^1$

素因数の和:1112

約数の個数: 64

約数和(自身を含む): 54452160

約数和(自身を除く): 33582920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1021, 1022, 1460, 2042, 2044, 2555, 2920, 4084, 4088, 5105, 5110, 7147, 8168, 10210, 10220, 14294, 20420, 20440, 28588, 35735, 40840, 57176, 71470, 74533, 142940, 149066, 285880, 298132, 372665, 521731, 596264, 745330, 1043462, 1490660, 2086924, 2608655, 2981320, 4173848, 5217310, 10434620, 20869240]

約数ペア:

[(1, 20869240), (2, 10434620), (4, 5217310), (5, 4173848), (7, 2981320), (8, 2608655), (10, 2086924), (14, 1490660), (20, 1043462), (28, 745330), (35, 596264), (40, 521731), (56, 372665), (70, 298132), (73, 285880), (140, 149066), (146, 142940), (280, 74533), (292, 71470), (365, 57176), (511, 40840), (584, 35735), (730, 28588), (1021, 20440), (1022, 20420), (1460, 14294), (2042, 10220), (2044, 10210), (2555, 8168), (2920, 7147), (4084, 5110), (4088, 5105)]