20980560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:185

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 49729200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 43, 48, 57, 60, 76, 80, 86, 95, 107, 114, 120, 129, 152, 172, 190, 214, 215, 228, 240, 258, 285, 304, 321, 344, 380, 428, 430, 456, 516, 535, 570, 642, 645, 688, 760, 817, 856, 860, 912, 1032, 1070, 1140, 1284, 1290, 1520, 1605, 1634, 1712, 1720, 2033, 2064, 2140, 2280, 2451, 2568, 2580, 3210, 3268, 3440, 4066, 4085, 4280, 4560, 4601, 4902, 5136, 5160, 6099, 6420, 6536, 8132, 8170, 8560, 9202, 9804, 10165, 10320, 12198, 12255, 12840, 13072, 13803, 16264, 16340, 18404, 19608, 20330, 23005, 24396, 24510, 25680, 27606, 30495, 32528, 32680, 36808, 39216, 40660, 46010, 48792, 49020, 55212, 60990, 65360, 69015, 73616, 81320, 87419, 92020, 97584, 98040, 110424, 121980, 138030, 162640, 174838, 184040, 196080, 220848, 243960, 262257, 276060, 349676, 368080, 437095, 487920, 524514, 552120, 699352, 874190, 1049028, 1104240, 1311285, 1398704, 1748380, 2098056, 2622570, 3496760, 4196112, 5245140, 6993520, 10490280, 20980560]

約数ペア:

[(1, 20980560), (2, 10490280), (3, 6993520), (4, 5245140), (5, 4196112), (6, 3496760), (8, 2622570), (10, 2098056), (12, 1748380), (15, 1398704), (16, 1311285), (19, 1104240), (20, 1049028), (24, 874190), (30, 699352), (38, 552120), (40, 524514), (43, 487920), (48, 437095), (57, 368080), (60, 349676), (76, 276060), (80, 262257), (86, 243960), (95, 220848), (107, 196080), (114, 184040), (120, 174838), (129, 162640), (152, 138030), (172, 121980), (190, 110424), (214, 98040), (215, 97584), (228, 92020), (240, 87419), (258, 81320), (285, 73616), (304, 69015), (321, 65360), (344, 60990), (380, 55212), (428, 49020), (430, 48792), (456, 46010), (516, 40660), (535, 39216), (570, 36808), (642, 32680), (645, 32528), (688, 30495), (760, 27606), (817, 25680), (856, 24510), (860, 24396), (912, 23005), (1032, 20330), (1070, 19608), (1140, 18404), (1284, 16340), (1290, 16264), (1520, 13803), (1605, 13072), (1634, 12840), (1712, 12255), (1720, 12198), (2033, 10320), (2064, 10165), (2140, 9804), (2280, 9202), (2451, 8560), (2568, 8170), (2580, 8132), (3210, 6536), (3268, 6420), (3440, 6099), (4066, 5160), (4085, 5136), (4280, 4902), (4560, 4601)]