20696620

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{431}}^1$

素因数の和:468

約数の個数: 60

約数和(自身を含む): 50821344

約数和(自身を除く): 30124724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 431, 490, 686, 862, 980, 1372, 1715, 1724, 2155, 2401, 3017, 3430, 4310, 4802, 6034, 6860, 8620, 9604, 12005, 12068, 15085, 21119, 24010, 30170, 42238, 48020, 60340, 84476, 105595, 147833, 211190, 295666, 422380, 591332, 739165, 1034831, 1478330, 2069662, 2956660, 4139324, 5174155, 10348310, 20696620]

約数ペア:

[(1, 20696620), (2, 10348310), (4, 5174155), (5, 4139324), (7, 2956660), (10, 2069662), (14, 1478330), (20, 1034831), (28, 739165), (35, 591332), (49, 422380), (70, 295666), (98, 211190), (140, 147833), (196, 105595), (245, 84476), (343, 60340), (431, 48020), (490, 42238), (686, 30170), (862, 24010), (980, 21119), (1372, 15085), (1715, 12068), (1724, 12005), (2155, 9604), (2401, 8620), (3017, 6860), (3430, 6034), (4310, 4802)]