179910980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1\times {\mathrm{661}}^1$

素因数の和:1140

約数の個数: 48

約数和(自身を含む): 391480320

約数和(自身を除く): 211569340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 439, 620, 661, 878, 1322, 1756, 2195, 2644, 3305, 4390, 6610, 8780, 13220, 13609, 20491, 27218, 40982, 54436, 68045, 81964, 102455, 136090, 204910, 272180, 290179, 409820, 580358, 1160716, 1450895, 2901790, 5803580, 8995549, 17991098, 35982196, 44977745, 89955490, 179910980]

約数ペア:

[(1, 179910980), (2, 89955490), (4, 44977745), (5, 35982196), (10, 17991098), (20, 8995549), (31, 5803580), (62, 2901790), (124, 1450895), (155, 1160716), (310, 580358), (439, 409820), (620, 290179), (661, 272180), (878, 204910), (1322, 136090), (1756, 102455), (2195, 81964), (2644, 68045), (3305, 54436), (4390, 40982), (6610, 27218), (8780, 20491), (13220, 13609)]