6820821

素因数分解:

$3^3\times 7^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 11673600

約数和(自身を除く): 4852779

約数列:

[1, 3, 7, 9, 21, 27, 63, 151, 189, 239, 453, 717, 1057, 1359, 1673, 2151, 3171, 4077, 5019, 6453, 9513, 15057, 28539, 36089, 45171, 108267, 252623, 324801, 757869, 974403, 2273607, 6820821]

約数ペア:

[(1, 6820821), (3, 2273607), (7, 974403), (9, 757869), (21, 324801), (27, 252623), (63, 108267), (151, 45171), (189, 36089), (239, 28539), (453, 15057), (717, 9513), (1057, 6453), (1359, 5019), (1673, 4077), (2151, 3171)]