28511720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1823}}^1$

素因数の和:1874

約数の個数: 64

約数和(自身を含む): 70917120

約数和(自身を除く): 42405400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1564, 1823, 1955, 3128, 3646, 3910, 7292, 7820, 9115, 14584, 15640, 18230, 30991, 36460, 41929, 61982, 72920, 83858, 123964, 154955, 167716, 209645, 247928, 309910, 335432, 419290, 619820, 712793, 838580, 1239640, 1425586, 1677160, 2851172, 3563965, 5702344, 7127930, 14255860, 28511720]

約数ペア:

[(1, 28511720), (2, 14255860), (4, 7127930), (5, 5702344), (8, 3563965), (10, 2851172), (17, 1677160), (20, 1425586), (23, 1239640), (34, 838580), (40, 712793), (46, 619820), (68, 419290), (85, 335432), (92, 309910), (115, 247928), (136, 209645), (170, 167716), (184, 154955), (230, 123964), (340, 83858), (391, 72920), (460, 61982), (680, 41929), (782, 36460), (920, 30991), (1564, 18230), (1823, 15640), (1955, 14584), (3128, 9115), (3646, 7820), (3910, 7292)]