39899720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20357}}^1$

素因数の和:20382

約数の個数: 48

約数和(自身を含む): 104436540

約数和(自身を除く): 64536820

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, 20357, 40714, 81428, 101785, 142499, 162856, 203570, 284998, 407140, 569996, 712495, 814280, 997493, 1139992, 1424990, 1994986, 2849980, 3989972, 4987465, 5699960, 7979944, 9974930, 19949860, 39899720]

約数ペア:

[(1, 39899720), (2, 19949860), (4, 9974930), (5, 7979944), (7, 5699960), (8, 4987465), (10, 3989972), (14, 2849980), (20, 1994986), (28, 1424990), (35, 1139992), (40, 997493), (49, 814280), (56, 712495), (70, 569996), (98, 407140), (140, 284998), (196, 203570), (245, 162856), (280, 142499), (392, 101785), (490, 81428), (980, 40714), (1960, 20357)]