139649020

素因数分解:

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

素因数の和:20387

約数の個数: 48

約数和(自身を含む): 342014400

約数和(自身を除く): 202365380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 20357, 40714, 81428, 101785, 142499, 203570, 284998, 407140, 569996, 712495, 997493, 1424990, 1994986, 2849980, 3989972, 4987465, 6982451, 9974930, 13964902, 19949860, 27929804, 34912255, 69824510, 139649020]

約数ペア:

[(1, 139649020), (2, 69824510), (4, 34912255), (5, 27929804), (7, 19949860), (10, 13964902), (14, 9974930), (20, 6982451), (28, 4987465), (35, 3989972), (49, 2849980), (70, 1994986), (98, 1424990), (140, 997493), (196, 712495), (245, 569996), (343, 407140), (490, 284998), (686, 203570), (980, 142499), (1372, 101785), (1715, 81428), (3430, 40714), (6860, 20357)]