20514888

素因数分解:

$2^3\times 3^2\times {\mathrm{499}}^1\times {\mathrm{571}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 55770000

約数和(自身を除く): 35255112

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 499, 571, 998, 1142, 1497, 1713, 1996, 2284, 2994, 3426, 3992, 4491, 4568, 5139, 5988, 6852, 8982, 10278, 11976, 13704, 17964, 20556, 35928, 41112, 284929, 569858, 854787, 1139716, 1709574, 2279432, 2564361, 3419148, 5128722, 6838296, 10257444, 20514888]

約数ペア:

[(1, 20514888), (2, 10257444), (3, 6838296), (4, 5128722), (6, 3419148), (8, 2564361), (9, 2279432), (12, 1709574), (18, 1139716), (24, 854787), (36, 569858), (72, 284929), (499, 41112), (571, 35928), (998, 20556), (1142, 17964), (1497, 13704), (1713, 11976), (1996, 10278), (2284, 8982), (2994, 6852), (3426, 5988), (3992, 5139), (4491, 4568)]