28882660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 68080320

約数和(自身を除く): 39197660

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 263, 289, 323, 340, 380, 526, 578, 646, 1052, 1156, 1292, 1315, 1445, 1615, 2630, 2890, 3230, 4471, 4997, 5260, 5491, 5780, 6460, 8942, 9994, 10982, 17884, 19988, 21964, 22355, 24985, 27455, 44710, 49970, 54910, 76007, 84949, 89420, 99940, 109820, 152014, 169898, 304028, 339796, 380035, 424745, 760070, 849490, 1444133, 1520140, 1698980, 2888266, 5776532, 7220665, 14441330, 28882660]

約数ペア:

[(1, 28882660), (2, 14441330), (4, 7220665), (5, 5776532), (10, 2888266), (17, 1698980), (19, 1520140), (20, 1444133), (34, 849490), (38, 760070), (68, 424745), (76, 380035), (85, 339796), (95, 304028), (170, 169898), (190, 152014), (263, 109820), (289, 99940), (323, 89420), (340, 84949), (380, 76007), (526, 54910), (578, 49970), (646, 44710), (1052, 27455), (1156, 24985), (1292, 22355), (1315, 21964), (1445, 19988), (1615, 17884), (2630, 10982), (2890, 9994), (3230, 8942), (4471, 6460), (4997, 5780), (5260, 5491)]