20666373

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 36997632

約数和(自身を除く): 16331259

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 61, 73, 91, 119, 183, 219, 221, 273, 357, 427, 511, 663, 793, 949, 1037, 1241, 1281, 1533, 1547, 2379, 2847, 3111, 3723, 4453, 4641, 5551, 6643, 7259, 8687, 13359, 13481, 16133, 16653, 19929, 21777, 26061, 31171, 40443, 48399, 57889, 75701, 93513, 94367, 112931, 173667, 227103, 283101, 338793, 405223, 529907, 984113, 1215669, 1589721, 2952339, 6888791, 20666373]

約数ペア:

[(1, 20666373), (3, 6888791), (7, 2952339), (13, 1589721), (17, 1215669), (21, 984113), (39, 529907), (51, 405223), (61, 338793), (73, 283101), (91, 227103), (119, 173667), (183, 112931), (219, 94367), (221, 93513), (273, 75701), (357, 57889), (427, 48399), (511, 40443), (663, 31171), (793, 26061), (949, 21777), (1037, 19929), (1241, 16653), (1281, 16133), (1533, 13481), (1547, 13359), (2379, 8687), (2847, 7259), (3111, 6643), (3723, 5551), (4453, 4641)]