21431900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1801}}^1$

素因数の和:1839

約数の個数: 72

約数和(自身を含む): 56308896

約数和(自身を除く): 34876996

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 50, 68, 70, 85, 100, 119, 140, 170, 175, 238, 340, 350, 425, 476, 595, 700, 850, 1190, 1700, 1801, 2380, 2975, 3602, 5950, 7204, 9005, 11900, 12607, 18010, 25214, 30617, 36020, 45025, 50428, 61234, 63035, 90050, 122468, 126070, 153085, 180100, 214319, 252140, 306170, 315175, 428638, 612340, 630350, 765425, 857276, 1071595, 1260700, 1530850, 2143190, 3061700, 4286380, 5357975, 10715950, 21431900]

約数ペア:

[(1, 21431900), (2, 10715950), (4, 5357975), (5, 4286380), (7, 3061700), (10, 2143190), (14, 1530850), (17, 1260700), (20, 1071595), (25, 857276), (28, 765425), (34, 630350), (35, 612340), (50, 428638), (68, 315175), (70, 306170), (85, 252140), (100, 214319), (119, 180100), (140, 153085), (170, 126070), (175, 122468), (238, 90050), (340, 63035), (350, 61234), (425, 50428), (476, 45025), (595, 36020), (700, 30617), (850, 25214), (1190, 18010), (1700, 12607), (1801, 11900), (2380, 9005), (2975, 7204), (3602, 5950)]