28704920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:836

約数の個数: 64

約数和(自身を含む): 69128640

約数和(自身を除く): 40423720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 41, 46, 82, 92, 115, 164, 184, 205, 230, 328, 410, 460, 761, 820, 920, 943, 1522, 1640, 1886, 3044, 3772, 3805, 4715, 6088, 7544, 7610, 9430, 15220, 17503, 18860, 30440, 31201, 35006, 37720, 62402, 70012, 87515, 124804, 140024, 156005, 175030, 249608, 312010, 350060, 624020, 700120, 717623, 1248040, 1435246, 2870492, 3588115, 5740984, 7176230, 14352460, 28704920]

約数ペア:

[(1, 28704920), (2, 14352460), (4, 7176230), (5, 5740984), (8, 3588115), (10, 2870492), (20, 1435246), (23, 1248040), (40, 717623), (41, 700120), (46, 624020), (82, 350060), (92, 312010), (115, 249608), (164, 175030), (184, 156005), (205, 140024), (230, 124804), (328, 87515), (410, 70012), (460, 62402), (761, 37720), (820, 35006), (920, 31201), (943, 30440), (1522, 18860), (1640, 17503), (1886, 15220), (3044, 9430), (3772, 7610), (3805, 7544), (4715, 6088)]