21152168

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22595032

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 67, 76, 124, 134, 152, 248, 268, 536, 589, 1178, 1273, 2077, 2356, 2546, 4154, 4489, 4712, 5092, 8308, 8978, 10184, 16616, 17956, 35912, 39463, 78926, 85291, 139159, 157852, 170582, 278318, 315704, 341164, 556636, 682328, 1113272, 2644021, 5288042, 10576084, 21152168]

約数ペア:

[(1, 21152168), (2, 10576084), (4, 5288042), (8, 2644021), (19, 1113272), (31, 682328), (38, 556636), (62, 341164), (67, 315704), (76, 278318), (124, 170582), (134, 157852), (152, 139159), (248, 85291), (268, 78926), (536, 39463), (589, 35912), (1178, 17956), (1273, 16616), (2077, 10184), (2356, 8978), (2546, 8308), (4154, 5092), (4489, 4712)]