20405238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{10337}}^1$

素因数の和:10396

約数の個数: 32

約数和(自身を含む): 47637504

約数和(自身を除く): 27232266

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 47, 94, 141, 282, 329, 658, 987, 1974, 10337, 20674, 31011, 62022, 72359, 144718, 217077, 434154, 485839, 971678, 1457517, 2915034, 3400873, 6801746, 10202619, 20405238]

約数ペア:

[(1, 20405238), (2, 10202619), (3, 6801746), (6, 3400873), (7, 2915034), (14, 1457517), (21, 971678), (42, 485839), (47, 434154), (94, 217077), (141, 144718), (282, 72359), (329, 62022), (658, 31011), (987, 20674), (1974, 10337)]