18908988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{983}}^1$

素因数の和:1226

約数の個数: 48

約数和(自身を含む): 50695680

約数和(自身を除く): 31786692

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 229, 458, 687, 916, 983, 1374, 1603, 1966, 2748, 2949, 3206, 3932, 4809, 5898, 6412, 6881, 9618, 11796, 13762, 19236, 20643, 27524, 41286, 82572, 225107, 450214, 675321, 900428, 1350642, 1575749, 2701284, 3151498, 4727247, 6302996, 9454494, 18908988]

約数ペア:

[(1, 18908988), (2, 9454494), (3, 6302996), (4, 4727247), (6, 3151498), (7, 2701284), (12, 1575749), (14, 1350642), (21, 900428), (28, 675321), (42, 450214), (84, 225107), (229, 82572), (458, 41286), (687, 27524), (916, 20643), (983, 19236), (1374, 13762), (1603, 11796), (1966, 9618), (2748, 6881), (2949, 6412), (3206, 5898), (3932, 4809)]