21580308

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{8443}}^1$

素因数の和:8524

約数の個数: 36

約数和(自身を含む): 55325088

約数和(自身を除く): 33744780

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 8443, 16886, 25329, 33772, 50658, 75987, 101316, 151974, 303948, 599453, 1198906, 1798359, 2397812, 3596718, 5395077, 7193436, 10790154, 21580308]

約数ペア:

[(1, 21580308), (2, 10790154), (3, 7193436), (4, 5395077), (6, 3596718), (9, 2397812), (12, 1798359), (18, 1198906), (36, 599453), (71, 303948), (142, 151974), (213, 101316), (284, 75987), (426, 50658), (639, 33772), (852, 25329), (1278, 16886), (2556, 8443)]