17787980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2593}}^1$

素因数の和:2623

約数の個数: 48

約数和(自身を含む): 43579200

約数和(自身を除く): 25791220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2593, 3430, 5186, 6860, 10372, 12965, 18151, 25930, 36302, 51860, 72604, 90755, 127057, 181510, 254114, 363020, 508228, 635285, 889399, 1270570, 1778798, 2541140, 3557596, 4446995, 8893990, 17787980]

約数ペア:

[(1, 17787980), (2, 8893990), (4, 4446995), (5, 3557596), (7, 2541140), (10, 1778798), (14, 1270570), (20, 889399), (28, 635285), (35, 508228), (49, 363020), (70, 254114), (98, 181510), (140, 127057), (196, 90755), (245, 72604), (343, 51860), (490, 36302), (686, 25930), (980, 18151), (1372, 12965), (1715, 10372), (2593, 6860), (3430, 5186)]