39994040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{443}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 94145760

約数和(自身を除く): 54151720

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 244, 296, 305, 370, 443, 488, 610, 740, 886, 1220, 1480, 1772, 2215, 2257, 2440, 3544, 4430, 4514, 8860, 9028, 11285, 16391, 17720, 18056, 22570, 27023, 32782, 45140, 54046, 65564, 81955, 90280, 108092, 131128, 135115, 163910, 216184, 270230, 327820, 540460, 655640, 999851, 1080920, 1999702, 3999404, 4999255, 7998808, 9998510, 19997020, 39994040]

約数ペア:

[(1, 39994040), (2, 19997020), (4, 9998510), (5, 7998808), (8, 4999255), (10, 3999404), (20, 1999702), (37, 1080920), (40, 999851), (61, 655640), (74, 540460), (122, 327820), (148, 270230), (185, 216184), (244, 163910), (296, 135115), (305, 131128), (370, 108092), (443, 90280), (488, 81955), (610, 65564), (740, 54046), (886, 45140), (1220, 32782), (1480, 27023), (1772, 22570), (2215, 18056), (2257, 17720), (2440, 16391), (3544, 11285), (4430, 9028), (4514, 8860)]