78208020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{39499}}^1$

素因数の和:39525

約数の個数: 72

約数和(自身を含む): 258804000

約数和(自身を除く): 180595980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 39499, 78998, 118497, 157996, 197495, 236994, 355491, 394990, 434489, 473988, 592485, 710982, 789980, 868978, 1184970, 1303467, 1421964, 1737956, 1777455, 2172445, 2369940, 2606934, 3554910, 3910401, 4344890, 5213868, 6517335, 7109820, 7820802, 8689780, 13034670, 15641604, 19552005, 26069340, 39104010, 78208020]

約数ペア:

[(1, 78208020), (2, 39104010), (3, 26069340), (4, 19552005), (5, 15641604), (6, 13034670), (9, 8689780), (10, 7820802), (11, 7109820), (12, 6517335), (15, 5213868), (18, 4344890), (20, 3910401), (22, 3554910), (30, 2606934), (33, 2369940), (36, 2172445), (44, 1777455), (45, 1737956), (55, 1421964), (60, 1303467), (66, 1184970), (90, 868978), (99, 789980), (110, 710982), (132, 592485), (165, 473988), (180, 434489), (198, 394990), (220, 355491), (330, 236994), (396, 197495), (495, 157996), (660, 118497), (990, 78998), (1980, 39499)]