999302020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{5099}}^1$

素因数の和:5388

約数の個数: 48

約数和(自身を含む): 2159136000

約数和(自身を除く): 1159833980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 239, 410, 478, 820, 956, 1195, 2390, 4780, 5099, 9799, 10198, 19598, 20396, 25495, 39196, 48995, 50990, 97990, 101980, 195980, 209059, 418118, 836236, 1045295, 1218661, 2090590, 2437322, 4181180, 4874644, 6093305, 12186610, 24373220, 49965101, 99930202, 199860404, 249825505, 499651010, 999302020]

約数ペア:

[(1, 999302020), (2, 499651010), (4, 249825505), (5, 199860404), (10, 99930202), (20, 49965101), (41, 24373220), (82, 12186610), (164, 6093305), (205, 4874644), (239, 4181180), (410, 2437322), (478, 2090590), (820, 1218661), (956, 1045295), (1195, 836236), (2390, 418118), (4780, 209059), (5099, 195980), (9799, 101980), (10198, 97990), (19598, 50990), (20396, 48995), (25495, 39196)]