21651868

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40699}}^1$

素因数の和:40729

約数の個数: 24

約数和(自身を含む): 45584000

約数和(自身を除く): 23932132

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40699, 81398, 162796, 284893, 569786, 773281, 1139572, 1546562, 3093124, 5412967, 10825934, 21651868]

約数ペア:

[(1, 21651868), (2, 10825934), (4, 5412967), (7, 3093124), (14, 1546562), (19, 1139572), (28, 773281), (38, 569786), (76, 284893), (133, 162796), (266, 81398), (532, 40699)]