81996400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10789}}^1$

素因数の和:10826

約数の個数: 60

約数和(自身を含む): 207383800

約数和(自身を除く): 125387400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 3800, 7600, 10789, 21578, 43156, 53945, 86312, 107890, 172624, 204991, 215780, 269725, 409982, 431560, 539450, 819964, 863120, 1024955, 1078900, 1639928, 2049910, 2157800, 3279856, 4099820, 4315600, 5124775, 8199640, 10249550, 16399280, 20499100, 40998200, 81996400]

約数ペア:

[(1, 81996400), (2, 40998200), (4, 20499100), (5, 16399280), (8, 10249550), (10, 8199640), (16, 5124775), (19, 4315600), (20, 4099820), (25, 3279856), (38, 2157800), (40, 2049910), (50, 1639928), (76, 1078900), (80, 1024955), (95, 863120), (100, 819964), (152, 539450), (190, 431560), (200, 409982), (304, 269725), (380, 215780), (400, 204991), (475, 172624), (760, 107890), (950, 86312), (1520, 53945), (1900, 43156), (3800, 21578), (7600, 10789)]