21154796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9461}}^1$

素因数の和:9521

約数の個数: 24

約数和(自身を含む): 40800144

約数和(自身を除く): 19645348

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9461, 18922, 37844, 122993, 245986, 406823, 491972, 813646, 1627292, 5288699, 10577398, 21154796]

約数ペア:

[(1, 21154796), (2, 10577398), (4, 5288699), (13, 1627292), (26, 813646), (43, 491972), (52, 406823), (86, 245986), (172, 122993), (559, 37844), (1118, 18922), (2236, 9461)]