21553280

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{283}}^1$

素因数の和:326

約数の個数: 128

約数和(自身を含む): 62570880

約数和(自身を除く): 41017600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 128, 136, 140, 160, 170, 224, 238, 272, 280, 283, 320, 340, 448, 476, 544, 560, 566, 595, 640, 680, 896, 952, 1088, 1120, 1132, 1190, 1360, 1415, 1904, 1981, 2176, 2240, 2264, 2380, 2720, 2830, 3808, 3962, 4480, 4528, 4760, 4811, 5440, 5660, 7616, 7924, 9056, 9520, 9622, 9905, 10880, 11320, 15232, 15848, 18112, 19040, 19244, 19810, 22640, 24055, 31696, 33677, 36224, 38080, 38488, 39620, 45280, 48110, 63392, 67354, 76160, 76976, 79240, 90560, 96220, 126784, 134708, 153952, 158480, 168385, 181120, 192440, 253568, 269416, 307904, 316960, 336770, 384880, 538832, 615808, 633920, 673540, 769760, 1077664, 1267840, 1347080, 1539520, 2155328, 2694160, 3079040, 4310656, 5388320, 10776640, 21553280]

約数ペア:

[(1, 21553280), (2, 10776640), (4, 5388320), (5, 4310656), (7, 3079040), (8, 2694160), (10, 2155328), (14, 1539520), (16, 1347080), (17, 1267840), (20, 1077664), (28, 769760), (32, 673540), (34, 633920), (35, 615808), (40, 538832), (56, 384880), (64, 336770), (68, 316960), (70, 307904), (80, 269416), (85, 253568), (112, 192440), (119, 181120), (128, 168385), (136, 158480), (140, 153952), (160, 134708), (170, 126784), (224, 96220), (238, 90560), (272, 79240), (280, 76976), (283, 76160), (320, 67354), (340, 63392), (448, 48110), (476, 45280), (544, 39620), (560, 38488), (566, 38080), (595, 36224), (640, 33677), (680, 31696), (896, 24055), (952, 22640), (1088, 19810), (1120, 19244), (1132, 19040), (1190, 18112), (1360, 15848), (1415, 15232), (1904, 11320), (1981, 10880), (2176, 9905), (2240, 9622), (2264, 9520), (2380, 9056), (2720, 7924), (2830, 7616), (3808, 5660), (3962, 5440), (4480, 4811), (4528, 4760)]