81838760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2129}}^1$

素因数の和:2202

約数の個数: 48

約数和(自身を含む): 190358100

約数和(自身を除く): 108519340

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 961, 1240, 1922, 2129, 3844, 4258, 4805, 7688, 8516, 9610, 10645, 17032, 19220, 21290, 38440, 42580, 65999, 85160, 131998, 263996, 329995, 527992, 659990, 1319980, 2045969, 2639960, 4091938, 8183876, 10229845, 16367752, 20459690, 40919380, 81838760]

約数ペア:

[(1, 81838760), (2, 40919380), (4, 20459690), (5, 16367752), (8, 10229845), (10, 8183876), (20, 4091938), (31, 2639960), (40, 2045969), (62, 1319980), (124, 659990), (155, 527992), (248, 329995), (310, 263996), (620, 131998), (961, 85160), (1240, 65999), (1922, 42580), (2129, 38440), (3844, 21290), (4258, 19220), (4805, 17032), (7688, 10645), (8516, 9610)]