78813520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2729}}^1$

素因数の和:2780

約数の個数: 60

約数和(自身を含む): 193464180

約数和(自身を除く): 114650660

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 1444, 1520, 1805, 2729, 2888, 3610, 5458, 5776, 7220, 10916, 13645, 14440, 21832, 27290, 28880, 43664, 51851, 54580, 103702, 109160, 207404, 218320, 259255, 414808, 518510, 829616, 985169, 1037020, 1970338, 2074040, 3940676, 4148080, 4925845, 7881352, 9851690, 15762704, 19703380, 39406760, 78813520]

約数ペア:

[(1, 78813520), (2, 39406760), (4, 19703380), (5, 15762704), (8, 9851690), (10, 7881352), (16, 4925845), (19, 4148080), (20, 3940676), (38, 2074040), (40, 1970338), (76, 1037020), (80, 985169), (95, 829616), (152, 518510), (190, 414808), (304, 259255), (361, 218320), (380, 207404), (722, 109160), (760, 103702), (1444, 54580), (1520, 51851), (1805, 43664), (2729, 28880), (2888, 27290), (3610, 21832), (5458, 14440), (5776, 13645), (7220, 10916)]