28316540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{907}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 68339712

約数和(自身を除く): 40023172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 907, 1115, 1561, 1814, 2230, 3122, 3628, 4460, 4535, 6244, 6349, 7805, 9070, 12698, 15610, 18140, 25396, 31220, 31745, 63490, 126980, 202261, 404522, 809044, 1011305, 1415827, 2022610, 2831654, 4045220, 5663308, 7079135, 14158270, 28316540]

約数ペア:

[(1, 28316540), (2, 14158270), (4, 7079135), (5, 5663308), (7, 4045220), (10, 2831654), (14, 2022610), (20, 1415827), (28, 1011305), (35, 809044), (70, 404522), (140, 202261), (223, 126980), (446, 63490), (892, 31745), (907, 31220), (1115, 25396), (1561, 18140), (1814, 15610), (2230, 12698), (3122, 9070), (3628, 7805), (4460, 6349), (4535, 6244)]