205940420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{3413}}^1$

素因数の和:3860

約数の個数: 48

約数和(自身を含む): 495548928

約数和(自身を除く): 289608508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 431, 862, 1724, 2155, 3017, 3413, 4310, 6034, 6826, 8620, 12068, 13652, 15085, 17065, 23891, 30170, 34130, 47782, 60340, 68260, 95564, 119455, 238910, 477820, 1471003, 2942006, 5884012, 7355015, 10297021, 14710030, 20594042, 29420060, 41188084, 51485105, 102970210, 205940420]

約数ペア:

[(1, 205940420), (2, 102970210), (4, 51485105), (5, 41188084), (7, 29420060), (10, 20594042), (14, 14710030), (20, 10297021), (28, 7355015), (35, 5884012), (70, 2942006), (140, 1471003), (431, 477820), (862, 238910), (1724, 119455), (2155, 95564), (3017, 68260), (3413, 60340), (4310, 47782), (6034, 34130), (6826, 30170), (8620, 23891), (12068, 17065), (13652, 15085)]