21477720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:385

約数の個数: 128

約数和(自身を含む): 71850240

約数和(自身を除く): 50372520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 53, 55, 60, 66, 88, 106, 110, 120, 132, 159, 165, 212, 220, 264, 265, 307, 318, 330, 424, 440, 530, 583, 614, 636, 660, 795, 921, 1060, 1166, 1228, 1272, 1320, 1535, 1590, 1749, 1842, 2120, 2332, 2456, 2915, 3070, 3180, 3377, 3498, 3684, 4605, 4664, 5830, 6140, 6360, 6754, 6996, 7368, 8745, 9210, 10131, 11660, 12280, 13508, 13992, 16271, 16885, 17490, 18420, 20262, 23320, 27016, 32542, 33770, 34980, 36840, 40524, 48813, 50655, 65084, 67540, 69960, 81048, 81355, 97626, 101310, 130168, 135080, 162710, 178981, 195252, 202620, 244065, 325420, 357962, 390504, 405240, 488130, 536943, 650840, 715924, 894905, 976260, 1073886, 1431848, 1789810, 1952520, 2147772, 2684715, 3579620, 4295544, 5369430, 7159240, 10738860, 21477720]

約数ペア:

[(1, 21477720), (2, 10738860), (3, 7159240), (4, 5369430), (5, 4295544), (6, 3579620), (8, 2684715), (10, 2147772), (11, 1952520), (12, 1789810), (15, 1431848), (20, 1073886), (22, 976260), (24, 894905), (30, 715924), (33, 650840), (40, 536943), (44, 488130), (53, 405240), (55, 390504), (60, 357962), (66, 325420), (88, 244065), (106, 202620), (110, 195252), (120, 178981), (132, 162710), (159, 135080), (165, 130168), (212, 101310), (220, 97626), (264, 81355), (265, 81048), (307, 69960), (318, 67540), (330, 65084), (424, 50655), (440, 48813), (530, 40524), (583, 36840), (614, 34980), (636, 33770), (660, 32542), (795, 27016), (921, 23320), (1060, 20262), (1166, 18420), (1228, 17490), (1272, 16885), (1320, 16271), (1535, 13992), (1590, 13508), (1749, 12280), (1842, 11660), (2120, 10131), (2332, 9210), (2456, 8745), (2915, 7368), (3070, 6996), (3180, 6754), (3377, 6360), (3498, 6140), (3684, 5830), (4605, 4664)]