21681112

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 42271200

約数和(自身を除く): 20590088

約数列:

[1, 2, 4, 8, 37, 74, 89, 148, 178, 296, 356, 712, 823, 1646, 3292, 3293, 6584, 6586, 13172, 26344, 30451, 60902, 73247, 121804, 146494, 243608, 292988, 585976, 2710139, 5420278, 10840556, 21681112]

約数ペア:

[(1, 21681112), (2, 10840556), (4, 5420278), (8, 2710139), (37, 585976), (74, 292988), (89, 243608), (148, 146494), (178, 121804), (296, 73247), (356, 60902), (712, 30451), (823, 26344), (1646, 13172), (3292, 6586), (3293, 6584)]