21360988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{13121}}^1$

素因数の和:13173

約数の個数: 24

約数和(自身を含む): 41885424

約数和(自身を除く): 20524436

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 13121, 26242, 52484, 144331, 288662, 485477, 577324, 970954, 1941908, 5340247, 10680494, 21360988]

約数ペア:

[(1, 21360988), (2, 10680494), (4, 5340247), (11, 1941908), (22, 970954), (37, 577324), (44, 485477), (74, 288662), (148, 144331), (407, 52484), (814, 26242), (1628, 13121)]