81176720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24749}}^1$

素因数の和:24803

約数の個数: 40

約数和(自身を含む): 193347000

約数和(自身を除く): 112170280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 24749, 49498, 98996, 123745, 197992, 247490, 395984, 494980, 989960, 1014709, 1979920, 2029418, 4058836, 5073545, 8117672, 10147090, 16235344, 20294180, 40588360, 81176720]

約数ペア:

[(1, 81176720), (2, 40588360), (4, 20294180), (5, 16235344), (8, 10147090), (10, 8117672), (16, 5073545), (20, 4058836), (40, 2029418), (41, 1979920), (80, 1014709), (82, 989960), (164, 494980), (205, 395984), (328, 247490), (410, 197992), (656, 123745), (820, 98996), (1640, 49498), (3280, 24749)]