21586972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 43690752

約数和(自身を除く): 22103780

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 83, 92, 166, 253, 257, 332, 506, 514, 913, 1012, 1028, 1826, 1909, 2827, 3652, 3818, 5654, 5911, 7636, 11308, 11822, 20999, 21331, 23644, 41998, 42662, 65021, 83996, 85324, 130042, 234641, 260084, 469282, 490613, 938564, 981226, 1962452, 5396743, 10793486, 21586972]

約数ペア:

[(1, 21586972), (2, 10793486), (4, 5396743), (11, 1962452), (22, 981226), (23, 938564), (44, 490613), (46, 469282), (83, 260084), (92, 234641), (166, 130042), (253, 85324), (257, 83996), (332, 65021), (506, 42662), (514, 41998), (913, 23644), (1012, 21331), (1028, 20999), (1826, 11822), (1909, 11308), (2827, 7636), (3652, 5911), (3818, 5654)]