40238540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 87816960

約数和(自身を除く): 47578420

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 659, 710, 860, 1318, 1420, 2636, 3053, 3295, 6106, 6590, 12212, 13180, 15265, 28337, 30530, 46789, 56674, 61060, 93578, 113348, 141685, 187156, 233945, 283370, 467890, 566740, 935780, 2011927, 4023854, 8047708, 10059635, 20119270, 40238540]

約数ペア:

[(1, 40238540), (2, 20119270), (4, 10059635), (5, 8047708), (10, 4023854), (20, 2011927), (43, 935780), (71, 566740), (86, 467890), (142, 283370), (172, 233945), (215, 187156), (284, 141685), (355, 113348), (430, 93578), (659, 61060), (710, 56674), (860, 46789), (1318, 30530), (1420, 28337), (2636, 15265), (3053, 13180), (3295, 12212), (6106, 6590)]