20905404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4621}}^1$

素因数の和:4670

約数の個数: 48

約数和(自身を含む): 54354720

約数和(自身を除く): 33449316

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 58, 78, 87, 116, 156, 174, 348, 377, 754, 1131, 1508, 2262, 4524, 4621, 9242, 13863, 18484, 27726, 55452, 60073, 120146, 134009, 180219, 240292, 268018, 360438, 402027, 536036, 720876, 804054, 1608108, 1742117, 3484234, 5226351, 6968468, 10452702, 20905404]

約数ペア:

[(1, 20905404), (2, 10452702), (3, 6968468), (4, 5226351), (6, 3484234), (12, 1742117), (13, 1608108), (26, 804054), (29, 720876), (39, 536036), (52, 402027), (58, 360438), (78, 268018), (87, 240292), (116, 180219), (156, 134009), (174, 120146), (348, 60073), (377, 55452), (754, 27726), (1131, 18484), (1508, 13863), (2262, 9242), (4524, 4621)]