20713084

素因数分解:

$2^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:543

約数の個数: 48

約数和(自身を含む): 43724800

約数和(自身を除く): 23011716

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 343, 434, 487, 686, 868, 974, 1372, 1519, 1948, 3038, 3409, 6076, 6818, 10633, 13636, 15097, 21266, 23863, 30194, 42532, 47726, 60388, 95452, 105679, 167041, 211358, 334082, 422716, 668164, 739753, 1479506, 2959012, 5178271, 10356542, 20713084]

約数ペア:

[(1, 20713084), (2, 10356542), (4, 5178271), (7, 2959012), (14, 1479506), (28, 739753), (31, 668164), (49, 422716), (62, 334082), (98, 211358), (124, 167041), (196, 105679), (217, 95452), (343, 60388), (434, 47726), (487, 42532), (686, 30194), (868, 23863), (974, 21266), (1372, 15097), (1519, 13636), (1948, 10633), (3038, 6818), (3409, 6076)]