21655440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1$

素因数の和:1621

約数の個数: 120

約数和(自身を含む): 76602240

約数和(自身を除く): 54946800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 380, 456, 570, 684, 720, 760, 855, 912, 1140, 1368, 1520, 1583, 1710, 2280, 2736, 3166, 3420, 4560, 4749, 6332, 6840, 7915, 9498, 12664, 13680, 14247, 15830, 18996, 23745, 25328, 28494, 30077, 31660, 37992, 47490, 56988, 60154, 63320, 71235, 75984, 90231, 94980, 113976, 120308, 126640, 142470, 150385, 180462, 189960, 227952, 240616, 270693, 284940, 300770, 360924, 379920, 451155, 481232, 541386, 569880, 601540, 721848, 902310, 1082772, 1139760, 1203080, 1353465, 1443696, 1804620, 2165544, 2406160, 2706930, 3609240, 4331088, 5413860, 7218480, 10827720, 21655440]

約数ペア:

[(1, 21655440), (2, 10827720), (3, 7218480), (4, 5413860), (5, 4331088), (6, 3609240), (8, 2706930), (9, 2406160), (10, 2165544), (12, 1804620), (15, 1443696), (16, 1353465), (18, 1203080), (19, 1139760), (20, 1082772), (24, 902310), (30, 721848), (36, 601540), (38, 569880), (40, 541386), (45, 481232), (48, 451155), (57, 379920), (60, 360924), (72, 300770), (76, 284940), (80, 270693), (90, 240616), (95, 227952), (114, 189960), (120, 180462), (144, 150385), (152, 142470), (171, 126640), (180, 120308), (190, 113976), (228, 94980), (240, 90231), (285, 75984), (304, 71235), (342, 63320), (360, 60154), (380, 56988), (456, 47490), (570, 37992), (684, 31660), (720, 30077), (760, 28494), (855, 25328), (912, 23745), (1140, 18996), (1368, 15830), (1520, 14247), (1583, 13680), (1710, 12664), (2280, 9498), (2736, 7915), (3166, 6840), (3420, 6332), (4560, 4749)]