138855280

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{5581}}^1$

素因数の和:5905

約数の個数: 40

約数和(自身を含む): 323934624

約数和(自身を除く): 185079344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 3110, 4976, 5581, 6220, 11162, 12440, 22324, 24880, 27905, 44648, 55810, 89296, 111620, 223240, 446480, 1735691, 3471382, 6942764, 8678455, 13885528, 17356910, 27771056, 34713820, 69427640, 138855280]

約数ペア:

[(1, 138855280), (2, 69427640), (4, 34713820), (5, 27771056), (8, 17356910), (10, 13885528), (16, 8678455), (20, 6942764), (40, 3471382), (80, 1735691), (311, 446480), (622, 223240), (1244, 111620), (1555, 89296), (2488, 55810), (3110, 44648), (4976, 27905), (5581, 24880), (6220, 22324), (11162, 12440)]