21370140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 51278436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 43, 44, 45, 55, 60, 66, 86, 90, 99, 110, 129, 132, 165, 172, 180, 198, 215, 220, 251, 258, 330, 387, 396, 430, 473, 495, 502, 516, 645, 660, 753, 774, 860, 946, 990, 1004, 1255, 1290, 1419, 1506, 1548, 1892, 1935, 1980, 2259, 2365, 2510, 2580, 2761, 2838, 3012, 3765, 3870, 4257, 4518, 4730, 5020, 5522, 5676, 7095, 7530, 7740, 8283, 8514, 9036, 9460, 10793, 11044, 11295, 13805, 14190, 15060, 16566, 17028, 21285, 21586, 22590, 24849, 27610, 28380, 32379, 33132, 41415, 42570, 43172, 45180, 49698, 53965, 55220, 64758, 82830, 85140, 97137, 99396, 107930, 118723, 124245, 129516, 161895, 165660, 194274, 215860, 237446, 248490, 323790, 356169, 388548, 474892, 485685, 496980, 593615, 647580, 712338, 971370, 1068507, 1187230, 1424676, 1780845, 1942740, 2137014, 2374460, 3561690, 4274028, 5342535, 7123380, 10685070, 21370140]

約数ペア:

[(1, 21370140), (2, 10685070), (3, 7123380), (4, 5342535), (5, 4274028), (6, 3561690), (9, 2374460), (10, 2137014), (11, 1942740), (12, 1780845), (15, 1424676), (18, 1187230), (20, 1068507), (22, 971370), (30, 712338), (33, 647580), (36, 593615), (43, 496980), (44, 485685), (45, 474892), (55, 388548), (60, 356169), (66, 323790), (86, 248490), (90, 237446), (99, 215860), (110, 194274), (129, 165660), (132, 161895), (165, 129516), (172, 124245), (180, 118723), (198, 107930), (215, 99396), (220, 97137), (251, 85140), (258, 82830), (330, 64758), (387, 55220), (396, 53965), (430, 49698), (473, 45180), (495, 43172), (502, 42570), (516, 41415), (645, 33132), (660, 32379), (753, 28380), (774, 27610), (860, 24849), (946, 22590), (990, 21586), (1004, 21285), (1255, 17028), (1290, 16566), (1419, 15060), (1506, 14190), (1548, 13805), (1892, 11295), (1935, 11044), (1980, 10793), (2259, 9460), (2365, 9036), (2510, 8514), (2580, 8283), (2761, 7740), (2838, 7530), (3012, 7095), (3765, 5676), (3870, 5522), (4257, 5020), (4518, 4730)]