19721156

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3187}}^1$

素因数の和:3228

約数の個数: 48

約数和(自身を含む): 44989056

約数和(自身を除く): 25267900

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 52, 68, 91, 119, 182, 221, 238, 364, 442, 476, 884, 1547, 3094, 3187, 6188, 6374, 12748, 22309, 41431, 44618, 54179, 82862, 89236, 108358, 165724, 216716, 290017, 379253, 580034, 704327, 758506, 1160068, 1408654, 1517012, 2817308, 4930289, 9860578, 19721156]

約数ペア:

[(1, 19721156), (2, 9860578), (4, 4930289), (7, 2817308), (13, 1517012), (14, 1408654), (17, 1160068), (26, 758506), (28, 704327), (34, 580034), (52, 379253), (68, 290017), (91, 216716), (119, 165724), (182, 108358), (221, 89236), (238, 82862), (364, 54179), (442, 44618), (476, 41431), (884, 22309), (1547, 12748), (3094, 6374), (3187, 6188)]