21804930

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 45932670

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 83, 90, 105, 126, 135, 139, 166, 189, 210, 249, 270, 278, 315, 378, 415, 417, 498, 581, 630, 695, 747, 830, 834, 945, 973, 1162, 1245, 1251, 1390, 1494, 1743, 1890, 1946, 2085, 2241, 2490, 2502, 2905, 2919, 3486, 3735, 3753, 4170, 4482, 4865, 5229, 5810, 5838, 6255, 7470, 7506, 8715, 8757, 9730, 10458, 11205, 11537, 12510, 14595, 15687, 17430, 17514, 18765, 22410, 23074, 26145, 26271, 29190, 31374, 34611, 37530, 43785, 52290, 52542, 57685, 69222, 78435, 80759, 87570, 103833, 115370, 131355, 156870, 161518, 173055, 207666, 242277, 262710, 311499, 346110, 403795, 484554, 519165, 622998, 726831, 807590, 1038330, 1211385, 1453662, 1557495, 2180493, 2422770, 3114990, 3634155, 4360986, 7268310, 10902465, 21804930]

約数ペア:

[(1, 21804930), (2, 10902465), (3, 7268310), (5, 4360986), (6, 3634155), (7, 3114990), (9, 2422770), (10, 2180493), (14, 1557495), (15, 1453662), (18, 1211385), (21, 1038330), (27, 807590), (30, 726831), (35, 622998), (42, 519165), (45, 484554), (54, 403795), (63, 346110), (70, 311499), (83, 262710), (90, 242277), (105, 207666), (126, 173055), (135, 161518), (139, 156870), (166, 131355), (189, 115370), (210, 103833), (249, 87570), (270, 80759), (278, 78435), (315, 69222), (378, 57685), (415, 52542), (417, 52290), (498, 43785), (581, 37530), (630, 34611), (695, 31374), (747, 29190), (830, 26271), (834, 26145), (945, 23074), (973, 22410), (1162, 18765), (1245, 17514), (1251, 17430), (1390, 15687), (1494, 14595), (1743, 12510), (1890, 11537), (1946, 11205), (2085, 10458), (2241, 9730), (2490, 8757), (2502, 8715), (2905, 7506), (2919, 7470), (3486, 6255), (3735, 5838), (3753, 5810), (4170, 5229), (4482, 4865)]