18571420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1217}}^1$

素因数の和:1342

約数の個数: 48

約数和(自身を含む): 45017280

約数和(自身を除く): 26445860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1217, 1526, 2180, 2434, 3052, 3815, 4868, 6085, 7630, 8519, 12170, 15260, 17038, 24340, 34076, 42595, 85190, 132653, 170380, 265306, 530612, 663265, 928571, 1326530, 1857142, 2653060, 3714284, 4642855, 9285710, 18571420]

約数ペア:

[(1, 18571420), (2, 9285710), (4, 4642855), (5, 3714284), (7, 2653060), (10, 1857142), (14, 1326530), (20, 928571), (28, 663265), (35, 530612), (70, 265306), (109, 170380), (140, 132653), (218, 85190), (436, 42595), (545, 34076), (763, 24340), (1090, 17038), (1217, 15260), (1526, 12170), (2180, 8519), (2434, 7630), (3052, 6085), (3815, 4868)]