19741720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13339}}^1$

素因数の和:13387

約数の個数: 32

約数和(自身を含む): 45622800

約数和(自身を除く): 25881080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13339, 26678, 53356, 66695, 106712, 133390, 266780, 493543, 533560, 987086, 1974172, 2467715, 3948344, 4935430, 9870860, 19741720]

約数ペア:

[(1, 19741720), (2, 9870860), (4, 4935430), (5, 3948344), (8, 2467715), (10, 1974172), (20, 987086), (37, 533560), (40, 493543), (74, 266780), (148, 133390), (185, 106712), (296, 66695), (370, 53356), (740, 26678), (1480, 13339)]