31493560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{821}}^1$

素因数の和:976

約数の個数: 64

約数和(自身を含む): 81673920

約数和(自身を除く): 50180360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 548, 685, 821, 959, 1096, 1370, 1642, 1918, 2740, 3284, 3836, 4105, 4795, 5480, 5747, 6568, 7672, 8210, 9590, 11494, 16420, 19180, 22988, 28735, 32840, 38360, 45976, 57470, 112477, 114940, 224954, 229880, 449908, 562385, 787339, 899816, 1124770, 1574678, 2249540, 3149356, 3936695, 4499080, 6298712, 7873390, 15746780, 31493560]

約数ペア:

[(1, 31493560), (2, 15746780), (4, 7873390), (5, 6298712), (7, 4499080), (8, 3936695), (10, 3149356), (14, 2249540), (20, 1574678), (28, 1124770), (35, 899816), (40, 787339), (56, 562385), (70, 449908), (137, 229880), (140, 224954), (274, 114940), (280, 112477), (548, 57470), (685, 45976), (821, 38360), (959, 32840), (1096, 28735), (1370, 22988), (1642, 19180), (1918, 16420), (2740, 11494), (3284, 9590), (3836, 8210), (4105, 7672), (4795, 6568), (5480, 5747)]