18551420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{54563}}^1$

素因数の和:54589

約数の個数: 24

約数和(自身を含む): 41250384

約数和(自身を除く): 22698964

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 54563, 109126, 218252, 272815, 545630, 927571, 1091260, 1855142, 3710284, 4637855, 9275710, 18551420]

約数ペア:

[(1, 18551420), (2, 9275710), (4, 4637855), (5, 3710284), (10, 1855142), (17, 1091260), (20, 927571), (34, 545630), (68, 272815), (85, 218252), (170, 109126), (340, 54563)]