18427640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 53637120

約数和(自身を除く): 35209480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 193, 217, 220, 248, 280, 308, 310, 341, 385, 386, 434, 440, 616, 620, 682, 770, 772, 868, 965, 1085, 1240, 1351, 1364, 1540, 1544, 1705, 1736, 1930, 2123, 2170, 2387, 2702, 2728, 3080, 3410, 3860, 4246, 4340, 4774, 5404, 5983, 6755, 6820, 7720, 8492, 8680, 9548, 10615, 10808, 11935, 11966, 13510, 13640, 14861, 16984, 19096, 21230, 23870, 23932, 27020, 29722, 29915, 41881, 42460, 47740, 47864, 54040, 59444, 59830, 65813, 74305, 83762, 84920, 95480, 118888, 119660, 131626, 148610, 167524, 209405, 239320, 263252, 297220, 329065, 335048, 418810, 460691, 526504, 594440, 658130, 837620, 921382, 1316260, 1675240, 1842764, 2303455, 2632520, 3685528, 4606910, 9213820, 18427640]

約数ペア:

[(1, 18427640), (2, 9213820), (4, 4606910), (5, 3685528), (7, 2632520), (8, 2303455), (10, 1842764), (11, 1675240), (14, 1316260), (20, 921382), (22, 837620), (28, 658130), (31, 594440), (35, 526504), (40, 460691), (44, 418810), (55, 335048), (56, 329065), (62, 297220), (70, 263252), (77, 239320), (88, 209405), (110, 167524), (124, 148610), (140, 131626), (154, 119660), (155, 118888), (193, 95480), (217, 84920), (220, 83762), (248, 74305), (280, 65813), (308, 59830), (310, 59444), (341, 54040), (385, 47864), (386, 47740), (434, 42460), (440, 41881), (616, 29915), (620, 29722), (682, 27020), (770, 23932), (772, 23870), (868, 21230), (965, 19096), (1085, 16984), (1240, 14861), (1351, 13640), (1364, 13510), (1540, 11966), (1544, 11935), (1705, 10808), (1736, 10615), (1930, 9548), (2123, 8680), (2170, 8492), (2387, 7720), (2702, 6820), (2728, 6755), (3080, 5983), (3410, 5404), (3860, 4774), (4246, 4340)]