20577780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:790

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 44740620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 90, 106, 108, 135, 159, 180, 212, 265, 270, 318, 477, 530, 540, 636, 719, 795, 954, 1060, 1431, 1438, 1590, 1908, 2157, 2385, 2862, 2876, 3180, 3595, 4314, 4770, 5724, 6471, 7155, 7190, 8628, 9540, 10785, 12942, 14310, 14380, 19413, 21570, 25884, 28620, 32355, 38107, 38826, 43140, 64710, 76214, 77652, 97065, 114321, 129420, 152428, 190535, 194130, 228642, 342963, 381070, 388260, 457284, 571605, 685926, 762140, 1028889, 1143210, 1371852, 1714815, 2057778, 2286420, 3429630, 4115556, 5144445, 6859260, 10288890, 20577780]

約数ペア:

[(1, 20577780), (2, 10288890), (3, 6859260), (4, 5144445), (5, 4115556), (6, 3429630), (9, 2286420), (10, 2057778), (12, 1714815), (15, 1371852), (18, 1143210), (20, 1028889), (27, 762140), (30, 685926), (36, 571605), (45, 457284), (53, 388260), (54, 381070), (60, 342963), (90, 228642), (106, 194130), (108, 190535), (135, 152428), (159, 129420), (180, 114321), (212, 97065), (265, 77652), (270, 76214), (318, 64710), (477, 43140), (530, 38826), (540, 38107), (636, 32355), (719, 28620), (795, 25884), (954, 21570), (1060, 19413), (1431, 14380), (1438, 14310), (1590, 12942), (1908, 10785), (2157, 9540), (2385, 8628), (2862, 7190), (2876, 7155), (3180, 6471), (3595, 5724), (4314, 4770)]