21643920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1349

約数の個数: 120

約数和(自身を含む): 75905856

約数和(自身を除く): 54261936

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1307, 1380, 1656, 1840, 2070, 2614, 2760, 3312, 3921, 4140, 5228, 5520, 6535, 7842, 8280, 10456, 11763, 13070, 15684, 16560, 19605, 20912, 23526, 26140, 30061, 31368, 39210, 47052, 52280, 58815, 60122, 62736, 78420, 90183, 94104, 104560, 117630, 120244, 150305, 156840, 180366, 188208, 235260, 240488, 270549, 300610, 313680, 360732, 450915, 470520, 480976, 541098, 601220, 721464, 901830, 941040, 1082196, 1202440, 1352745, 1442928, 1803660, 2164392, 2404880, 2705490, 3607320, 4328784, 5410980, 7214640, 10821960, 21643920]

約数ペア:

[(1, 21643920), (2, 10821960), (3, 7214640), (4, 5410980), (5, 4328784), (6, 3607320), (8, 2705490), (9, 2404880), (10, 2164392), (12, 1803660), (15, 1442928), (16, 1352745), (18, 1202440), (20, 1082196), (23, 941040), (24, 901830), (30, 721464), (36, 601220), (40, 541098), (45, 480976), (46, 470520), (48, 450915), (60, 360732), (69, 313680), (72, 300610), (80, 270549), (90, 240488), (92, 235260), (115, 188208), (120, 180366), (138, 156840), (144, 150305), (180, 120244), (184, 117630), (207, 104560), (230, 94104), (240, 90183), (276, 78420), (345, 62736), (360, 60122), (368, 58815), (414, 52280), (460, 47052), (552, 39210), (690, 31368), (720, 30061), (828, 26140), (920, 23526), (1035, 20912), (1104, 19605), (1307, 16560), (1380, 15684), (1656, 13070), (1840, 11763), (2070, 10456), (2614, 8280), (2760, 7842), (3312, 6535), (3921, 5520), (4140, 5228)]