20347521

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 9989247

約数列:

[1, 3, 17, 37, 41, 51, 111, 123, 263, 629, 697, 789, 1517, 1887, 2091, 4471, 4551, 9731, 10783, 13413, 25789, 29193, 32349, 77367, 165427, 183311, 398971, 496281, 549933, 1196913, 6782507, 20347521]

約数ペア:

[(1, 20347521), (3, 6782507), (17, 1196913), (37, 549933), (41, 496281), (51, 398971), (111, 183311), (123, 165427), (263, 77367), (629, 32349), (697, 29193), (789, 25789), (1517, 13413), (1887, 10783), (2091, 9731), (4471, 4551)]