20472840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 72025200

約数和(自身を除く): 51552360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 37, 40, 45, 53, 58, 60, 72, 74, 87, 90, 106, 111, 116, 120, 145, 148, 159, 174, 180, 185, 212, 222, 232, 261, 265, 290, 296, 318, 333, 348, 360, 370, 424, 435, 444, 477, 522, 530, 555, 580, 636, 666, 696, 740, 795, 870, 888, 954, 1044, 1060, 1073, 1110, 1160, 1272, 1305, 1332, 1480, 1537, 1590, 1665, 1740, 1908, 1961, 2088, 2120, 2146, 2220, 2385, 2610, 2664, 3074, 3180, 3219, 3330, 3480, 3816, 3922, 4292, 4440, 4611, 4770, 5220, 5365, 5883, 6148, 6360, 6438, 6660, 7685, 7844, 8584, 9222, 9540, 9657, 9805, 10440, 10730, 11766, 12296, 12876, 13320, 13833, 15370, 15688, 16095, 17649, 18444, 19080, 19314, 19610, 21460, 23055, 23532, 25752, 27666, 29415, 30740, 32190, 35298, 36888, 38628, 39220, 42920, 46110, 47064, 48285, 55332, 56869, 58830, 61480, 64380, 69165, 70596, 77256, 78440, 88245, 92220, 96570, 110664, 113738, 117660, 128760, 138330, 141192, 170607, 176490, 184440, 193140, 227476, 235320, 276660, 284345, 341214, 352980, 386280, 454952, 511821, 553320, 568690, 682428, 705960, 853035, 1023642, 1137380, 1364856, 1706070, 2047284, 2274760, 2559105, 3412140, 4094568, 5118210, 6824280, 10236420, 20472840]

約数ペア:

[(1, 20472840), (2, 10236420), (3, 6824280), (4, 5118210), (5, 4094568), (6, 3412140), (8, 2559105), (9, 2274760), (10, 2047284), (12, 1706070), (15, 1364856), (18, 1137380), (20, 1023642), (24, 853035), (29, 705960), (30, 682428), (36, 568690), (37, 553320), (40, 511821), (45, 454952), (53, 386280), (58, 352980), (60, 341214), (72, 284345), (74, 276660), (87, 235320), (90, 227476), (106, 193140), (111, 184440), (116, 176490), (120, 170607), (145, 141192), (148, 138330), (159, 128760), (174, 117660), (180, 113738), (185, 110664), (212, 96570), (222, 92220), (232, 88245), (261, 78440), (265, 77256), (290, 70596), (296, 69165), (318, 64380), (333, 61480), (348, 58830), (360, 56869), (370, 55332), (424, 48285), (435, 47064), (444, 46110), (477, 42920), (522, 39220), (530, 38628), (555, 36888), (580, 35298), (636, 32190), (666, 30740), (696, 29415), (740, 27666), (795, 25752), (870, 23532), (888, 23055), (954, 21460), (1044, 19610), (1060, 19314), (1073, 19080), (1110, 18444), (1160, 17649), (1272, 16095), (1305, 15688), (1332, 15370), (1480, 13833), (1537, 13320), (1590, 12876), (1665, 12296), (1740, 11766), (1908, 10730), (1961, 10440), (2088, 9805), (2120, 9657), (2146, 9540), (2220, 9222), (2385, 8584), (2610, 7844), (2664, 7685), (3074, 6660), (3180, 6438), (3219, 6360), (3330, 6148), (3480, 5883), (3816, 5365), (3922, 5220), (4292, 4770), (4440, 4611)]