21747840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:310

約数の個数: 128

約数和(自身を含む): 71089920

約数和(自身を除く): 49342080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 47, 48, 60, 64, 80, 94, 96, 120, 128, 141, 160, 188, 192, 235, 240, 241, 282, 320, 376, 384, 470, 480, 482, 564, 640, 705, 723, 752, 940, 960, 964, 1128, 1205, 1410, 1446, 1504, 1880, 1920, 1928, 2256, 2410, 2820, 2892, 3008, 3615, 3760, 3856, 4512, 4820, 5640, 5784, 6016, 7230, 7520, 7712, 9024, 9640, 11280, 11327, 11568, 14460, 15040, 15424, 18048, 19280, 22560, 22654, 23136, 28920, 30080, 30848, 33981, 38560, 45120, 45308, 46272, 56635, 57840, 67962, 77120, 90240, 90616, 92544, 113270, 115680, 135924, 154240, 169905, 181232, 226540, 231360, 271848, 339810, 362464, 453080, 462720, 543696, 679620, 724928, 906160, 1087392, 1359240, 1449856, 1812320, 2174784, 2718480, 3624640, 4349568, 5436960, 7249280, 10873920, 21747840]

約数ペア:

[(1, 21747840), (2, 10873920), (3, 7249280), (4, 5436960), (5, 4349568), (6, 3624640), (8, 2718480), (10, 2174784), (12, 1812320), (15, 1449856), (16, 1359240), (20, 1087392), (24, 906160), (30, 724928), (32, 679620), (40, 543696), (47, 462720), (48, 453080), (60, 362464), (64, 339810), (80, 271848), (94, 231360), (96, 226540), (120, 181232), (128, 169905), (141, 154240), (160, 135924), (188, 115680), (192, 113270), (235, 92544), (240, 90616), (241, 90240), (282, 77120), (320, 67962), (376, 57840), (384, 56635), (470, 46272), (480, 45308), (482, 45120), (564, 38560), (640, 33981), (705, 30848), (723, 30080), (752, 28920), (940, 23136), (960, 22654), (964, 22560), (1128, 19280), (1205, 18048), (1410, 15424), (1446, 15040), (1504, 14460), (1880, 11568), (1920, 11327), (1928, 11280), (2256, 9640), (2410, 9024), (2820, 7712), (2892, 7520), (3008, 7230), (3615, 6016), (3760, 5784), (3856, 5640), (4512, 4820)]