20405814

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1399}}^1$

素因数の和:1445

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30397386

約数列:

[1, 2, 3, 6, 11, 13, 17, 22, 26, 33, 34, 39, 51, 66, 78, 102, 143, 187, 221, 286, 374, 429, 442, 561, 663, 858, 1122, 1326, 1399, 2431, 2798, 4197, 4862, 7293, 8394, 14586, 15389, 18187, 23783, 30778, 36374, 46167, 47566, 54561, 71349, 92334, 109122, 142698, 200057, 261613, 309179, 400114, 523226, 600171, 618358, 784839, 927537, 1200342, 1569678, 1855074, 3400969, 6801938, 10202907, 20405814]

約数ペア:

[(1, 20405814), (2, 10202907), (3, 6801938), (6, 3400969), (11, 1855074), (13, 1569678), (17, 1200342), (22, 927537), (26, 784839), (33, 618358), (34, 600171), (39, 523226), (51, 400114), (66, 309179), (78, 261613), (102, 200057), (143, 142698), (187, 109122), (221, 92334), (286, 71349), (374, 54561), (429, 47566), (442, 46167), (561, 36374), (663, 30778), (858, 23783), (1122, 18187), (1326, 15389), (1399, 14586), (2431, 8394), (2798, 7293), (4197, 4862)]