20460986

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 40830720

約数和(自身を除く): 20369734

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 61, 91, 97, 122, 133, 182, 194, 247, 266, 427, 494, 679, 793, 854, 1159, 1261, 1358, 1586, 1729, 1843, 2318, 2522, 3458, 3686, 5551, 5917, 8113, 8827, 11102, 11834, 12901, 15067, 16226, 17654, 23959, 25802, 30134, 41419, 47918, 76921, 82838, 105469, 112423, 153842, 167713, 210938, 224846, 335426, 538447, 786961, 1076894, 1461499, 1573922, 2922998, 10230493, 20460986]

約数ペア:

[(1, 20460986), (2, 10230493), (7, 2922998), (13, 1573922), (14, 1461499), (19, 1076894), (26, 786961), (38, 538447), (61, 335426), (91, 224846), (97, 210938), (122, 167713), (133, 153842), (182, 112423), (194, 105469), (247, 82838), (266, 76921), (427, 47918), (494, 41419), (679, 30134), (793, 25802), (854, 23959), (1159, 17654), (1261, 16226), (1358, 15067), (1586, 12901), (1729, 11834), (1843, 11102), (2318, 8827), (2522, 8113), (3458, 5917), (3686, 5551)]