18876620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1237}}^1$

素因数の和:1362

約数の個数: 48

約数和(自身を含む): 45756480

約数和(自身を除く): 26879860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1237, 1526, 2180, 2474, 3052, 3815, 4948, 6185, 7630, 8659, 12370, 15260, 17318, 24740, 34636, 43295, 86590, 134833, 173180, 269666, 539332, 674165, 943831, 1348330, 1887662, 2696660, 3775324, 4719155, 9438310, 18876620]

約数ペア:

[(1, 18876620), (2, 9438310), (4, 4719155), (5, 3775324), (7, 2696660), (10, 1887662), (14, 1348330), (20, 943831), (28, 674165), (35, 539332), (70, 269666), (109, 173180), (140, 134833), (218, 86590), (436, 43295), (545, 34636), (763, 24740), (1090, 17318), (1237, 15260), (1526, 12370), (2180, 8659), (2474, 7630), (3052, 6185), (3815, 4948)]