21820680

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1237}}^1$

素因数の和:1268

約数の個数: 144

約数和(自身を含む): 82562220

約数和(自身を除く): 60741540

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1237, 1260, 1470, 1764, 1960, 2205, 2474, 2520, 2940, 3528, 3711, 4410, 4948, 5880, 6185, 7422, 8659, 8820, 9896, 11133, 12370, 14844, 17318, 17640, 18555, 22266, 24740, 25977, 29688, 34636, 37110, 43295, 44532, 49480, 51954, 55665, 60613, 69272, 74220, 77931, 86590, 89064, 103908, 111330, 121226, 129885, 148440, 155862, 173180, 181839, 207816, 222660, 242452, 259770, 303065, 311724, 346360, 363678, 389655, 445320, 484904, 519540, 545517, 606130, 623448, 727356, 779310, 909195, 1039080, 1091034, 1212260, 1454712, 1558620, 1818390, 2182068, 2424520, 2727585, 3117240, 3636780, 4364136, 5455170, 7273560, 10910340, 21820680]

約数ペア:

[(1, 21820680), (2, 10910340), (3, 7273560), (4, 5455170), (5, 4364136), (6, 3636780), (7, 3117240), (8, 2727585), (9, 2424520), (10, 2182068), (12, 1818390), (14, 1558620), (15, 1454712), (18, 1212260), (20, 1091034), (21, 1039080), (24, 909195), (28, 779310), (30, 727356), (35, 623448), (36, 606130), (40, 545517), (42, 519540), (45, 484904), (49, 445320), (56, 389655), (60, 363678), (63, 346360), (70, 311724), (72, 303065), (84, 259770), (90, 242452), (98, 222660), (105, 207816), (120, 181839), (126, 173180), (140, 155862), (147, 148440), (168, 129885), (180, 121226), (196, 111330), (210, 103908), (245, 89064), (252, 86590), (280, 77931), (294, 74220), (315, 69272), (360, 60613), (392, 55665), (420, 51954), (441, 49480), (490, 44532), (504, 43295), (588, 37110), (630, 34636), (735, 29688), (840, 25977), (882, 24740), (980, 22266), (1176, 18555), (1237, 17640), (1260, 17318), (1470, 14844), (1764, 12370), (1960, 11133), (2205, 9896), (2474, 8820), (2520, 8659), (2940, 7422), (3528, 6185), (3711, 5880), (4410, 4948)]