78849880

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6421}}^1$

素因数の和:6739

約数の個数: 32

約数和(自身を含む): 178017840

約数和(自身を除く): 99167960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 3070, 6140, 6421, 12280, 12842, 25684, 32105, 51368, 64210, 128420, 256840, 1971247, 3942494, 7884988, 9856235, 15769976, 19712470, 39424940, 78849880]

約数ペア:

[(1, 78849880), (2, 39424940), (4, 19712470), (5, 15769976), (8, 9856235), (10, 7884988), (20, 3942494), (40, 1971247), (307, 256840), (614, 128420), (1228, 64210), (1535, 51368), (2456, 32105), (3070, 25684), (6140, 12842), (6421, 12280)]