218721890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{1721}}^1$

素因数の和:1978

約数の個数: 32

約数和(自身を含む): 401708160

約数和(自身を除く): 182986270

約数列:

[1, 2, 5, 10, 71, 142, 179, 355, 358, 710, 895, 1721, 1790, 3442, 8605, 12709, 17210, 25418, 63545, 122191, 127090, 244382, 308059, 610955, 616118, 1221910, 1540295, 3080590, 21872189, 43744378, 109360945, 218721890]

約数ペア:

[(1, 218721890), (2, 109360945), (5, 43744378), (10, 21872189), (71, 3080590), (142, 1540295), (179, 1221910), (355, 616118), (358, 610955), (710, 308059), (895, 244382), (1721, 127090), (1790, 122191), (3442, 63545), (8605, 25418), (12709, 17210)]