173640440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{61141}}^1$

素因数の和:61223

約数の個数: 32

約数和(自身を含む): 396200160

約数和(自身を除く): 222559720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 61141, 122282, 244564, 305705, 489128, 611410, 1222820, 2445640, 4341011, 8682022, 17364044, 21705055, 34728088, 43410110, 86820220, 173640440]

約数ペア:

[(1, 173640440), (2, 86820220), (4, 43410110), (5, 34728088), (8, 21705055), (10, 17364044), (20, 8682022), (40, 4341011), (71, 2445640), (142, 1222820), (284, 611410), (355, 489128), (568, 305705), (710, 244564), (1420, 122282), (2840, 61141)]