20758751

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 25401600

約数和(自身を除く): 4642849

約数列:

[1, 13, 17, 29, 41, 79, 221, 377, 493, 533, 697, 1027, 1189, 1343, 2291, 3239, 6409, 9061, 15457, 17459, 20213, 29783, 38947, 42107, 55063, 93931, 262769, 506311, 715819, 1221103, 1596827, 20758751]

約数ペア:

[(1, 20758751), (13, 1596827), (17, 1221103), (29, 715819), (41, 506311), (79, 262769), (221, 93931), (377, 55063), (493, 42107), (533, 38947), (697, 29783), (1027, 20213), (1189, 17459), (1343, 15457), (2291, 9061), (3239, 6409)]