21580560

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:222

約数の個数: 160

約数和(自身を含む): 75828480

約数和(自身を除く): 54247920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 97, 103, 108, 120, 135, 144, 180, 194, 206, 216, 240, 270, 291, 309, 360, 388, 412, 432, 485, 515, 540, 582, 618, 720, 776, 824, 873, 927, 970, 1030, 1080, 1164, 1236, 1455, 1545, 1552, 1648, 1746, 1854, 1940, 2060, 2160, 2328, 2472, 2619, 2781, 2910, 3090, 3492, 3708, 3880, 4120, 4365, 4635, 4656, 4944, 5238, 5562, 5820, 6180, 6984, 7416, 7760, 8240, 8730, 9270, 9991, 10476, 11124, 11640, 12360, 13095, 13905, 13968, 14832, 17460, 18540, 19982, 20952, 22248, 23280, 24720, 26190, 27810, 29973, 34920, 37080, 39964, 41904, 44496, 49955, 52380, 55620, 59946, 69840, 74160, 79928, 89919, 99910, 104760, 111240, 119892, 149865, 159856, 179838, 199820, 209520, 222480, 239784, 269757, 299730, 359676, 399640, 449595, 479568, 539514, 599460, 719352, 799280, 899190, 1079028, 1198920, 1348785, 1438704, 1798380, 2158056, 2397840, 2697570, 3596760, 4316112, 5395140, 7193520, 10790280, 21580560]

約数ペア:

[(1, 21580560), (2, 10790280), (3, 7193520), (4, 5395140), (5, 4316112), (6, 3596760), (8, 2697570), (9, 2397840), (10, 2158056), (12, 1798380), (15, 1438704), (16, 1348785), (18, 1198920), (20, 1079028), (24, 899190), (27, 799280), (30, 719352), (36, 599460), (40, 539514), (45, 479568), (48, 449595), (54, 399640), (60, 359676), (72, 299730), (80, 269757), (90, 239784), (97, 222480), (103, 209520), (108, 199820), (120, 179838), (135, 159856), (144, 149865), (180, 119892), (194, 111240), (206, 104760), (216, 99910), (240, 89919), (270, 79928), (291, 74160), (309, 69840), (360, 59946), (388, 55620), (412, 52380), (432, 49955), (485, 44496), (515, 41904), (540, 39964), (582, 37080), (618, 34920), (720, 29973), (776, 27810), (824, 26190), (873, 24720), (927, 23280), (970, 22248), (1030, 20952), (1080, 19982), (1164, 18540), (1236, 17460), (1455, 14832), (1545, 13968), (1552, 13905), (1648, 13095), (1746, 12360), (1854, 11640), (1940, 11124), (2060, 10476), (2160, 9991), (2328, 9270), (2472, 8730), (2619, 8240), (2781, 7760), (2910, 7416), (3090, 6984), (3492, 6180), (3708, 5820), (3880, 5562), (4120, 5238), (4365, 4944), (4635, 4656)]