7880020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 17273088

約数和(自身を除く): 9393068

約数列:

[1, 2, 4, 5, 10, 20, 47, 83, 94, 101, 166, 188, 202, 235, 332, 404, 415, 470, 505, 830, 940, 1010, 1660, 2020, 3901, 4747, 7802, 8383, 9494, 15604, 16766, 18988, 19505, 23735, 33532, 39010, 41915, 47470, 78020, 83830, 94940, 167660, 394001, 788002, 1576004, 1970005, 3940010, 7880020]

約数ペア:

[(1, 7880020), (2, 3940010), (4, 1970005), (5, 1576004), (10, 788002), (20, 394001), (47, 167660), (83, 94940), (94, 83830), (101, 78020), (166, 47470), (188, 41915), (202, 39010), (235, 33532), (332, 23735), (404, 19505), (415, 18988), (470, 16766), (505, 15604), (830, 9494), (940, 8383), (1010, 7802), (1660, 4747), (2020, 3901)]