21286168

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{263}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 40930560

約数和(自身を除く): 19644392

約数列:

[1, 2, 4, 8, 67, 134, 151, 263, 268, 302, 526, 536, 604, 1052, 1208, 2104, 10117, 17621, 20234, 35242, 39713, 40468, 70484, 79426, 80936, 140968, 158852, 317704, 2660771, 5321542, 10643084, 21286168]

約数ペア:

[(1, 21286168), (2, 10643084), (4, 5321542), (8, 2660771), (67, 317704), (134, 158852), (151, 140968), (263, 80936), (268, 79426), (302, 70484), (526, 40468), (536, 39713), (604, 35242), (1052, 20234), (1208, 17621), (2104, 10117)]