21492180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{859}}^1$

素因数の和:1013

約数の個数: 72

約数和(自身を含む): 65738400

約数和(自身を除く): 44246220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 859, 1251, 1390, 1668, 1718, 2085, 2502, 2577, 2780, 3436, 4170, 4295, 5004, 5154, 6255, 7731, 8340, 8590, 10308, 12510, 12885, 15462, 17180, 25020, 25770, 30924, 38655, 51540, 77310, 119401, 154620, 238802, 358203, 477604, 597005, 716406, 1074609, 1194010, 1432812, 1791015, 2149218, 2388020, 3582030, 4298436, 5373045, 7164060, 10746090, 21492180]

約数ペア:

[(1, 21492180), (2, 10746090), (3, 7164060), (4, 5373045), (5, 4298436), (6, 3582030), (9, 2388020), (10, 2149218), (12, 1791015), (15, 1432812), (18, 1194010), (20, 1074609), (30, 716406), (36, 597005), (45, 477604), (60, 358203), (90, 238802), (139, 154620), (180, 119401), (278, 77310), (417, 51540), (556, 38655), (695, 30924), (834, 25770), (859, 25020), (1251, 17180), (1390, 15462), (1668, 12885), (1718, 12510), (2085, 10308), (2502, 8590), (2577, 8340), (2780, 7731), (3436, 6255), (4170, 5154), (4295, 5004)]