21850800

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:291

約数の個数: 120

約数和(自身を含む): 71037120

約数和(自身を除く): 49186320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 131, 139, 150, 200, 240, 262, 278, 300, 393, 400, 417, 524, 556, 600, 655, 695, 786, 834, 1048, 1112, 1200, 1310, 1390, 1572, 1668, 1965, 2085, 2096, 2224, 2620, 2780, 3144, 3275, 3336, 3475, 3930, 4170, 5240, 5560, 6288, 6550, 6672, 6950, 7860, 8340, 9825, 10425, 10480, 11120, 13100, 13900, 15720, 16680, 18209, 19650, 20850, 26200, 27800, 31440, 33360, 36418, 39300, 41700, 52400, 54627, 55600, 72836, 78600, 83400, 91045, 109254, 145672, 157200, 166800, 182090, 218508, 273135, 291344, 364180, 437016, 455225, 546270, 728360, 874032, 910450, 1092540, 1365675, 1456720, 1820900, 2185080, 2731350, 3641800, 4370160, 5462700, 7283600, 10925400, 21850800]

約数ペア:

[(1, 21850800), (2, 10925400), (3, 7283600), (4, 5462700), (5, 4370160), (6, 3641800), (8, 2731350), (10, 2185080), (12, 1820900), (15, 1456720), (16, 1365675), (20, 1092540), (24, 910450), (25, 874032), (30, 728360), (40, 546270), (48, 455225), (50, 437016), (60, 364180), (75, 291344), (80, 273135), (100, 218508), (120, 182090), (131, 166800), (139, 157200), (150, 145672), (200, 109254), (240, 91045), (262, 83400), (278, 78600), (300, 72836), (393, 55600), (400, 54627), (417, 52400), (524, 41700), (556, 39300), (600, 36418), (655, 33360), (695, 31440), (786, 27800), (834, 26200), (1048, 20850), (1112, 19650), (1200, 18209), (1310, 16680), (1390, 15720), (1572, 13900), (1668, 13100), (1965, 11120), (2085, 10480), (2096, 10425), (2224, 9825), (2620, 8340), (2780, 7860), (3144, 6950), (3275, 6672), (3336, 6550), (3475, 6288), (3930, 5560), (4170, 5240)]