1971900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{313}}^1$

素因数の和:340

約数の個数: 108

約数和(自身を含む): 7086352

約数和(自身を除く): 5114452

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 313, 315, 350, 420, 450, 525, 626, 630, 700, 900, 939, 1050, 1252, 1260, 1565, 1575, 1878, 2100, 2191, 2817, 3130, 3150, 3756, 4382, 4695, 5634, 6260, 6300, 6573, 7825, 8764, 9390, 10955, 11268, 13146, 14085, 15650, 18780, 19719, 21910, 23475, 26292, 28170, 31300, 32865, 39438, 43820, 46950, 54775, 56340, 65730, 70425, 78876, 93900, 98595, 109550, 131460, 140850, 164325, 197190, 219100, 281700, 328650, 394380, 492975, 657300, 985950, 1971900]

約数ペア:

[(1, 1971900), (2, 985950), (3, 657300), (4, 492975), (5, 394380), (6, 328650), (7, 281700), (9, 219100), (10, 197190), (12, 164325), (14, 140850), (15, 131460), (18, 109550), (20, 98595), (21, 93900), (25, 78876), (28, 70425), (30, 65730), (35, 56340), (36, 54775), (42, 46950), (45, 43820), (50, 39438), (60, 32865), (63, 31300), (70, 28170), (75, 26292), (84, 23475), (90, 21910), (100, 19719), (105, 18780), (126, 15650), (140, 14085), (150, 13146), (175, 11268), (180, 10955), (210, 9390), (225, 8764), (252, 7825), (300, 6573), (313, 6300), (315, 6260), (350, 5634), (420, 4695), (450, 4382), (525, 3756), (626, 3150), (630, 3130), (700, 2817), (900, 2191), (939, 2100), (1050, 1878), (1252, 1575), (1260, 1565)]