19391140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{499}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 42840000

約数和(自身を除く): 23448860

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 67, 116, 134, 145, 268, 290, 335, 499, 580, 670, 998, 1340, 1943, 1996, 2495, 3886, 4990, 7772, 9715, 9980, 14471, 19430, 28942, 33433, 38860, 57884, 66866, 72355, 133732, 144710, 167165, 289420, 334330, 668660, 969557, 1939114, 3878228, 4847785, 9695570, 19391140]

約数ペア:

[(1, 19391140), (2, 9695570), (4, 4847785), (5, 3878228), (10, 1939114), (20, 969557), (29, 668660), (58, 334330), (67, 289420), (116, 167165), (134, 144710), (145, 133732), (268, 72355), (290, 66866), (335, 57884), (499, 38860), (580, 33433), (670, 28942), (998, 19430), (1340, 14471), (1943, 9980), (1996, 9715), (2495, 7772), (3886, 4990)]