289018660

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{42131}}^1$

素因数の和:42161

約数の個数: 48

約数和(自身を含む): 707817600

約数和(自身を除く): 418798940

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, 3430, 6860, 42131, 84262, 168524, 210655, 294917, 421310, 589834, 842620, 1179668, 1474585, 2064419, 2949170, 4128838, 5898340, 8257676, 10322095, 14450933, 20644190, 28901866, 41288380, 57803732, 72254665, 144509330, 289018660]

約数ペア:

[(1, 289018660), (2, 144509330), (4, 72254665), (5, 57803732), (7, 41288380), (10, 28901866), (14, 20644190), (20, 14450933), (28, 10322095), (35, 8257676), (49, 5898340), (70, 4128838), (98, 2949170), (140, 2064419), (196, 1474585), (245, 1179668), (343, 842620), (490, 589834), (686, 421310), (980, 294917), (1372, 210655), (1715, 168524), (3430, 84262), (6860, 42131)]