20512668680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3185197}}^1$

素因数の和:3185238

約数の個数: 64

約数和(自身を含む): 55040221440

約数和(自身を除く): 34527552760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 3185197, 6370394, 12740788, 15925985, 22296379, 25481576, 31851970, 44592758, 63703940, 73259531, 89185516, 111481895, 127407880, 146519062, 178371032, 222963790, 293038124, 366297655, 445927580, 512816717, 586076248, 732595310, 891855160, 1025633434, 1465190620, 2051266868, 2564083585, 2930381240, 4102533736, 5128167170, 10256334340, 20512668680]

約数ペア:

[(1, 20512668680), (2, 10256334340), (4, 5128167170), (5, 4102533736), (7, 2930381240), (8, 2564083585), (10, 2051266868), (14, 1465190620), (20, 1025633434), (23, 891855160), (28, 732595310), (35, 586076248), (40, 512816717), (46, 445927580), (56, 366297655), (70, 293038124), (92, 222963790), (115, 178371032), (140, 146519062), (161, 127407880), (184, 111481895), (230, 89185516), (280, 73259531), (322, 63703940), (460, 44592758), (644, 31851970), (805, 25481576), (920, 22296379), (1288, 15925985), (1610, 12740788), (3220, 6370394), (6440, 3185197)]