21245700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 71773184

約数和(自身を除く): 50527484

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 67, 70, 75, 84, 100, 105, 134, 140, 150, 151, 175, 201, 210, 268, 300, 302, 335, 350, 402, 420, 453, 469, 525, 604, 670, 700, 755, 804, 906, 938, 1005, 1050, 1057, 1340, 1407, 1510, 1675, 1812, 1876, 2010, 2100, 2114, 2265, 2345, 2814, 3020, 3171, 3350, 3775, 4020, 4228, 4530, 4690, 5025, 5285, 5628, 6342, 6700, 7035, 7550, 9060, 9380, 10050, 10117, 10570, 11325, 11725, 12684, 14070, 15100, 15855, 20100, 20234, 21140, 22650, 23450, 26425, 28140, 30351, 31710, 35175, 40468, 45300, 46900, 50585, 52850, 60702, 63420, 70350, 70819, 79275, 101170, 105700, 121404, 140700, 141638, 151755, 158550, 202340, 212457, 252925, 283276, 303510, 317100, 354095, 424914, 505850, 607020, 708190, 758775, 849828, 1011700, 1062285, 1416380, 1517550, 1770475, 2124570, 3035100, 3540950, 4249140, 5311425, 7081900, 10622850, 21245700]

約数ペア:

[(1, 21245700), (2, 10622850), (3, 7081900), (4, 5311425), (5, 4249140), (6, 3540950), (7, 3035100), (10, 2124570), (12, 1770475), (14, 1517550), (15, 1416380), (20, 1062285), (21, 1011700), (25, 849828), (28, 758775), (30, 708190), (35, 607020), (42, 505850), (50, 424914), (60, 354095), (67, 317100), (70, 303510), (75, 283276), (84, 252925), (100, 212457), (105, 202340), (134, 158550), (140, 151755), (150, 141638), (151, 140700), (175, 121404), (201, 105700), (210, 101170), (268, 79275), (300, 70819), (302, 70350), (335, 63420), (350, 60702), (402, 52850), (420, 50585), (453, 46900), (469, 45300), (525, 40468), (604, 35175), (670, 31710), (700, 30351), (755, 28140), (804, 26425), (906, 23450), (938, 22650), (1005, 21140), (1050, 20234), (1057, 20100), (1340, 15855), (1407, 15100), (1510, 14070), (1675, 12684), (1812, 11725), (1876, 11325), (2010, 10570), (2100, 10117), (2114, 10050), (2265, 9380), (2345, 9060), (2814, 7550), (3020, 7035), (3171, 6700), (3350, 6342), (3775, 5628), (4020, 5285), (4228, 5025), (4530, 4690)]