21511440

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:478

約数の個数: 160

約数和(自身を含む): 77495040

約数和(自身を除く): 55983600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 90, 92, 108, 115, 120, 135, 138, 144, 180, 184, 207, 216, 230, 240, 270, 276, 345, 360, 368, 414, 432, 433, 460, 540, 552, 621, 690, 720, 828, 866, 920, 1035, 1080, 1104, 1242, 1299, 1380, 1656, 1732, 1840, 2070, 2160, 2165, 2484, 2598, 2760, 3105, 3312, 3464, 3897, 4140, 4330, 4968, 5196, 5520, 6210, 6495, 6928, 7794, 8280, 8660, 9936, 9959, 10392, 11691, 12420, 12990, 15588, 16560, 17320, 19485, 19918, 20784, 23382, 24840, 25980, 29877, 31176, 34640, 38970, 39836, 46764, 49680, 49795, 51960, 58455, 59754, 62352, 77940, 79672, 89631, 93528, 99590, 103920, 116910, 119508, 149385, 155880, 159344, 179262, 187056, 199180, 233820, 239016, 268893, 298770, 311760, 358524, 398360, 448155, 467640, 478032, 537786, 597540, 717048, 796720, 896310, 935280, 1075572, 1195080, 1344465, 1434096, 1792620, 2151144, 2390160, 2688930, 3585240, 4302288, 5377860, 7170480, 10755720, 21511440]

約数ペア:

[(1, 21511440), (2, 10755720), (3, 7170480), (4, 5377860), (5, 4302288), (6, 3585240), (8, 2688930), (9, 2390160), (10, 2151144), (12, 1792620), (15, 1434096), (16, 1344465), (18, 1195080), (20, 1075572), (23, 935280), (24, 896310), (27, 796720), (30, 717048), (36, 597540), (40, 537786), (45, 478032), (46, 467640), (48, 448155), (54, 398360), (60, 358524), (69, 311760), (72, 298770), (80, 268893), (90, 239016), (92, 233820), (108, 199180), (115, 187056), (120, 179262), (135, 159344), (138, 155880), (144, 149385), (180, 119508), (184, 116910), (207, 103920), (216, 99590), (230, 93528), (240, 89631), (270, 79672), (276, 77940), (345, 62352), (360, 59754), (368, 58455), (414, 51960), (432, 49795), (433, 49680), (460, 46764), (540, 39836), (552, 38970), (621, 34640), (690, 31176), (720, 29877), (828, 25980), (866, 24840), (920, 23382), (1035, 20784), (1080, 19918), (1104, 19485), (1242, 17320), (1299, 16560), (1380, 15588), (1656, 12990), (1732, 12420), (1840, 11691), (2070, 10392), (2160, 9959), (2165, 9936), (2484, 8660), (2598, 8280), (2760, 7794), (3105, 6928), (3312, 6495), (3464, 6210), (3897, 5520), (4140, 5196), (4330, 4968)]