20880912

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 58815680

約数和(自身を除く): 37934768

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 109, 156, 208, 218, 307, 312, 327, 436, 614, 624, 654, 872, 921, 1228, 1308, 1417, 1744, 1842, 2456, 2616, 2834, 3684, 3991, 4251, 4912, 5232, 5668, 7368, 7982, 8502, 11336, 11973, 14736, 15964, 17004, 22672, 23946, 31928, 33463, 34008, 47892, 63856, 66926, 68016, 95784, 100389, 133852, 191568, 200778, 267704, 401556, 435019, 535408, 803112, 870038, 1305057, 1606224, 1740076, 2610114, 3480152, 5220228, 6960304, 10440456, 20880912]

約数ペア:

[(1, 20880912), (2, 10440456), (3, 6960304), (4, 5220228), (6, 3480152), (8, 2610114), (12, 1740076), (13, 1606224), (16, 1305057), (24, 870038), (26, 803112), (39, 535408), (48, 435019), (52, 401556), (78, 267704), (104, 200778), (109, 191568), (156, 133852), (208, 100389), (218, 95784), (307, 68016), (312, 66926), (327, 63856), (436, 47892), (614, 34008), (624, 33463), (654, 31928), (872, 23946), (921, 22672), (1228, 17004), (1308, 15964), (1417, 14736), (1744, 11973), (1842, 11336), (2456, 8502), (2616, 7982), (2834, 7368), (3684, 5668), (3991, 5232), (4251, 4912)]