20382740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 51819264

約数和(自身を除く): 31436524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 53, 67, 70, 82, 106, 134, 140, 164, 205, 212, 265, 268, 287, 335, 371, 410, 469, 530, 574, 670, 742, 820, 938, 1060, 1148, 1340, 1435, 1484, 1855, 1876, 2173, 2345, 2747, 2870, 3551, 3710, 4346, 4690, 5494, 5740, 7102, 7420, 8692, 9380, 10865, 10988, 13735, 14204, 15211, 17755, 19229, 21730, 24857, 27470, 30422, 35510, 38458, 43460, 49714, 54940, 60844, 71020, 76055, 76916, 96145, 99428, 124285, 145591, 152110, 192290, 248570, 291182, 304220, 384580, 497140, 582364, 727955, 1019137, 1455910, 2038274, 2911820, 4076548, 5095685, 10191370, 20382740]

約数ペア:

[(1, 20382740), (2, 10191370), (4, 5095685), (5, 4076548), (7, 2911820), (10, 2038274), (14, 1455910), (20, 1019137), (28, 727955), (35, 582364), (41, 497140), (53, 384580), (67, 304220), (70, 291182), (82, 248570), (106, 192290), (134, 152110), (140, 145591), (164, 124285), (205, 99428), (212, 96145), (265, 76916), (268, 76055), (287, 71020), (335, 60844), (371, 54940), (410, 49714), (469, 43460), (530, 38458), (574, 35510), (670, 30422), (742, 27470), (820, 24857), (938, 21730), (1060, 19229), (1148, 17755), (1340, 15211), (1435, 14204), (1484, 13735), (1855, 10988), (1876, 10865), (2173, 9380), (2345, 8692), (2747, 7420), (2870, 7102), (3551, 5740), (3710, 5494), (4346, 4690)]