21567189

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 34626816

約数和(自身を除く): 13059627

約数列:

[1, 3, 7, 21, 37, 41, 111, 123, 259, 287, 677, 777, 861, 1517, 2031, 4551, 4739, 10619, 14217, 25049, 27757, 31857, 75147, 83271, 175343, 194299, 526029, 582897, 1027009, 3081027, 7189063, 21567189]

約数ペア:

[(1, 21567189), (3, 7189063), (7, 3081027), (21, 1027009), (37, 582897), (41, 526029), (111, 194299), (123, 175343), (259, 83271), (287, 75147), (677, 31857), (777, 27757), (861, 25049), (1517, 14217), (2031, 10619), (4551, 4739)]