20724105

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1213}}^1$

素因数の和:1305

約数の個数: 32

約数和(自身を含む): 35662464

約数和(自身を除く): 14938359

約数列:

[1, 3, 5, 15, 17, 51, 67, 85, 201, 255, 335, 1005, 1139, 1213, 3417, 3639, 5695, 6065, 17085, 18195, 20621, 61863, 81271, 103105, 243813, 309315, 406355, 1219065, 1381607, 4144821, 6908035, 20724105]

約数ペア:

[(1, 20724105), (3, 6908035), (5, 4144821), (15, 1381607), (17, 1219065), (51, 406355), (67, 309315), (85, 243813), (201, 103105), (255, 81271), (335, 61863), (1005, 20621), (1139, 18195), (1213, 17085), (3417, 6065), (3639, 5695)]