31287900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:388

約数の個数: 144

約数和(自身を含む): 105993216

約数和(自身を除く): 74705316

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 47, 50, 60, 70, 75, 84, 94, 100, 105, 140, 141, 150, 175, 188, 210, 235, 282, 300, 317, 329, 350, 420, 470, 525, 564, 634, 658, 700, 705, 940, 951, 987, 1050, 1175, 1268, 1316, 1410, 1585, 1645, 1902, 1974, 2100, 2219, 2350, 2820, 3170, 3290, 3525, 3804, 3948, 4438, 4700, 4755, 4935, 6340, 6580, 6657, 7050, 7925, 8225, 8876, 9510, 9870, 11095, 13314, 14100, 14899, 15850, 16450, 19020, 19740, 22190, 23775, 24675, 26628, 29798, 31700, 32900, 33285, 44380, 44697, 47550, 49350, 55475, 59596, 66570, 74495, 89394, 95100, 98700, 104293, 110950, 133140, 148990, 166425, 178788, 208586, 221900, 223485, 297980, 312879, 332850, 372475, 417172, 446970, 521465, 625758, 665700, 744950, 893940, 1042930, 1117425, 1251516, 1489900, 1564395, 2085860, 2234850, 2607325, 3128790, 4469700, 5214650, 6257580, 7821975, 10429300, 15643950, 31287900]

約数ペア:

[(1, 31287900), (2, 15643950), (3, 10429300), (4, 7821975), (5, 6257580), (6, 5214650), (7, 4469700), (10, 3128790), (12, 2607325), (14, 2234850), (15, 2085860), (20, 1564395), (21, 1489900), (25, 1251516), (28, 1117425), (30, 1042930), (35, 893940), (42, 744950), (47, 665700), (50, 625758), (60, 521465), (70, 446970), (75, 417172), (84, 372475), (94, 332850), (100, 312879), (105, 297980), (140, 223485), (141, 221900), (150, 208586), (175, 178788), (188, 166425), (210, 148990), (235, 133140), (282, 110950), (300, 104293), (317, 98700), (329, 95100), (350, 89394), (420, 74495), (470, 66570), (525, 59596), (564, 55475), (634, 49350), (658, 47550), (700, 44697), (705, 44380), (940, 33285), (951, 32900), (987, 31700), (1050, 29798), (1175, 26628), (1268, 24675), (1316, 23775), (1410, 22190), (1585, 19740), (1645, 19020), (1902, 16450), (1974, 15850), (2100, 14899), (2219, 14100), (2350, 13314), (2820, 11095), (3170, 9870), (3290, 9510), (3525, 8876), (3804, 8225), (3948, 7925), (4438, 7050), (4700, 6657), (4755, 6580), (4935, 6340)]