1981988344

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{2897}}^1$

素因数の和:3572

約数の個数: 64

約数和(自身を含む): 4479148800

約数和(自身を除く): 2497160456

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 643, 1064, 1286, 2572, 2897, 4501, 5144, 5794, 9002, 11588, 12217, 18004, 20279, 23176, 24434, 36008, 40558, 48868, 55043, 81116, 85519, 97736, 110086, 162232, 171038, 220172, 342076, 385301, 440344, 684152, 770602, 1541204, 1862771, 3082408, 3725542, 7451084, 13039397, 14902168, 26078794, 35392649, 52157588, 70785298, 104315176, 141570596, 247748543, 283141192, 495497086, 990994172, 1981988344]

約数ペア:

[(1, 1981988344), (2, 990994172), (4, 495497086), (7, 283141192), (8, 247748543), (14, 141570596), (19, 104315176), (28, 70785298), (38, 52157588), (56, 35392649), (76, 26078794), (133, 14902168), (152, 13039397), (266, 7451084), (532, 3725542), (643, 3082408), (1064, 1862771), (1286, 1541204), (2572, 770602), (2897, 684152), (4501, 440344), (5144, 385301), (5794, 342076), (9002, 220172), (11588, 171038), (12217, 162232), (18004, 110086), (20279, 97736), (23176, 85519), (24434, 81116), (36008, 55043), (40558, 48868)]