40879720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20857}}^1$

素因数の和:20882

約数の個数: 48

約数和(自身を含む): 107001540

約数和(自身を除く): 66121820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20857, 41714, 83428, 104285, 145999, 166856, 208570, 291998, 417140, 583996, 729995, 834280, 1021993, 1167992, 1459990, 2043986, 2919980, 4087972, 5109965, 5839960, 8175944, 10219930, 20439860, 40879720]

約数ペア:

[(1, 40879720), (2, 20439860), (4, 10219930), (5, 8175944), (7, 5839960), (8, 5109965), (10, 4087972), (14, 2919980), (20, 2043986), (28, 1459990), (35, 1167992), (40, 1021993), (49, 834280), (56, 729995), (70, 583996), (98, 417140), (140, 291998), (196, 208570), (245, 166856), (280, 145999), (392, 104285), (490, 83428), (980, 41714), (1960, 20857)]