21805440

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:340

約数の個数: 128

約数和(自身を含む): 71457120

約数和(自身を除く): 49651680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 41, 48, 60, 64, 80, 82, 96, 120, 123, 128, 160, 164, 192, 205, 240, 246, 277, 320, 328, 384, 410, 480, 492, 554, 615, 640, 656, 820, 831, 960, 984, 1108, 1230, 1312, 1385, 1640, 1662, 1920, 1968, 2216, 2460, 2624, 2770, 3280, 3324, 3936, 4155, 4432, 4920, 5248, 5540, 6560, 6648, 7872, 8310, 8864, 9840, 11080, 11357, 13120, 13296, 15744, 16620, 17728, 19680, 22160, 22714, 26240, 26592, 33240, 34071, 35456, 39360, 44320, 45428, 53184, 56785, 66480, 68142, 78720, 88640, 90856, 106368, 113570, 132960, 136284, 170355, 177280, 181712, 227140, 265920, 272568, 340710, 363424, 454280, 531840, 545136, 681420, 726848, 908560, 1090272, 1362840, 1453696, 1817120, 2180544, 2725680, 3634240, 4361088, 5451360, 7268480, 10902720, 21805440]

約数ペア:

[(1, 21805440), (2, 10902720), (3, 7268480), (4, 5451360), (5, 4361088), (6, 3634240), (8, 2725680), (10, 2180544), (12, 1817120), (15, 1453696), (16, 1362840), (20, 1090272), (24, 908560), (30, 726848), (32, 681420), (40, 545136), (41, 531840), (48, 454280), (60, 363424), (64, 340710), (80, 272568), (82, 265920), (96, 227140), (120, 181712), (123, 177280), (128, 170355), (160, 136284), (164, 132960), (192, 113570), (205, 106368), (240, 90856), (246, 88640), (277, 78720), (320, 68142), (328, 66480), (384, 56785), (410, 53184), (480, 45428), (492, 44320), (554, 39360), (615, 35456), (640, 34071), (656, 33240), (820, 26592), (831, 26240), (960, 22714), (984, 22160), (1108, 19680), (1230, 17728), (1312, 16620), (1385, 15744), (1640, 13296), (1662, 13120), (1920, 11357), (1968, 11080), (2216, 9840), (2460, 8864), (2624, 8310), (2770, 7872), (3280, 6648), (3324, 6560), (3936, 5540), (4155, 5248), (4432, 4920)]