21806280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:412

約数の個数: 128

約数和(自身を含む): 74102400

約数和(自身を除く): 52296120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 270, 305, 331, 360, 366, 488, 540, 549, 610, 662, 732, 915, 993, 1080, 1098, 1220, 1324, 1464, 1647, 1655, 1830, 1986, 2196, 2440, 2648, 2745, 2979, 3294, 3310, 3660, 3972, 4392, 4965, 5490, 5958, 6588, 6620, 7320, 7944, 8235, 8937, 9930, 10980, 11916, 13176, 13240, 14895, 16470, 17874, 19860, 20191, 21960, 23832, 29790, 32940, 35748, 39720, 40382, 44685, 59580, 60573, 65880, 71496, 80764, 89370, 100955, 119160, 121146, 161528, 178740, 181719, 201910, 242292, 302865, 357480, 363438, 403820, 484584, 545157, 605730, 726876, 807640, 908595, 1090314, 1211460, 1453752, 1817190, 2180628, 2422920, 2725785, 3634380, 4361256, 5451570, 7268760, 10903140, 21806280]

約数ペア:

[(1, 21806280), (2, 10903140), (3, 7268760), (4, 5451570), (5, 4361256), (6, 3634380), (8, 2725785), (9, 2422920), (10, 2180628), (12, 1817190), (15, 1453752), (18, 1211460), (20, 1090314), (24, 908595), (27, 807640), (30, 726876), (36, 605730), (40, 545157), (45, 484584), (54, 403820), (60, 363438), (61, 357480), (72, 302865), (90, 242292), (108, 201910), (120, 181719), (122, 178740), (135, 161528), (180, 121146), (183, 119160), (216, 100955), (244, 89370), (270, 80764), (305, 71496), (331, 65880), (360, 60573), (366, 59580), (488, 44685), (540, 40382), (549, 39720), (610, 35748), (662, 32940), (732, 29790), (915, 23832), (993, 21960), (1080, 20191), (1098, 19860), (1220, 17874), (1324, 16470), (1464, 14895), (1647, 13240), (1655, 13176), (1830, 11916), (1986, 10980), (2196, 9930), (2440, 8937), (2648, 8235), (2745, 7944), (2979, 7320), (3294, 6620), (3310, 6588), (3660, 5958), (3972, 5490), (4392, 4965)]