20892720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{331}}^1$

素因数の和:610

約数の個数: 80

約数和(自身を含む): 65210112

約数和(自身を除く): 44317392

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 263, 331, 526, 662, 789, 993, 1052, 1315, 1324, 1578, 1655, 1986, 2104, 2630, 2648, 3156, 3310, 3945, 3972, 4208, 4965, 5260, 5296, 6312, 6620, 7890, 7944, 9930, 10520, 12624, 13240, 15780, 15888, 19860, 21040, 26480, 31560, 39720, 63120, 79440, 87053, 174106, 261159, 348212, 435265, 522318, 696424, 870530, 1044636, 1305795, 1392848, 1741060, 2089272, 2611590, 3482120, 4178544, 5223180, 6964240, 10446360, 20892720]

約数ペア:

[(1, 20892720), (2, 10446360), (3, 6964240), (4, 5223180), (5, 4178544), (6, 3482120), (8, 2611590), (10, 2089272), (12, 1741060), (15, 1392848), (16, 1305795), (20, 1044636), (24, 870530), (30, 696424), (40, 522318), (48, 435265), (60, 348212), (80, 261159), (120, 174106), (240, 87053), (263, 79440), (331, 63120), (526, 39720), (662, 31560), (789, 26480), (993, 21040), (1052, 19860), (1315, 15888), (1324, 15780), (1578, 13240), (1655, 12624), (1986, 10520), (2104, 9930), (2630, 7944), (2648, 7890), (3156, 6620), (3310, 6312), (3945, 5296), (3972, 5260), (4208, 4965)]