12939760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8513}}^1$

素因数の和:8545

約数の個数: 40

約数和(自身を含む): 31672080

約数和(自身を除く): 18732320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8513, 17026, 34052, 42565, 68104, 85130, 136208, 161747, 170260, 323494, 340520, 646988, 681040, 808735, 1293976, 1617470, 2587952, 3234940, 6469880, 12939760]

約数ペア:

[(1, 12939760), (2, 6469880), (4, 3234940), (5, 2587952), (8, 1617470), (10, 1293976), (16, 808735), (19, 681040), (20, 646988), (38, 340520), (40, 323494), (76, 170260), (80, 161747), (95, 136208), (152, 85130), (190, 68104), (304, 42565), (380, 34052), (760, 17026), (1520, 8513)]