639820020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1523381}}^1$

素因数の和:1523400

約数の個数: 48

約数和(自身を含む): 2047425408

約数和(自身を除く): 1407605388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1523381, 3046762, 4570143, 6093524, 7616905, 9140286, 10663667, 15233810, 18280572, 21327334, 22850715, 30467620, 31991001, 42654668, 45701430, 53318335, 63982002, 91402860, 106636670, 127964004, 159955005, 213273340, 319910010, 639820020]

約数ペア:

[(1, 639820020), (2, 319910010), (3, 213273340), (4, 159955005), (5, 127964004), (6, 106636670), (7, 91402860), (10, 63982002), (12, 53318335), (14, 45701430), (15, 42654668), (20, 31991001), (21, 30467620), (28, 22850715), (30, 21327334), (35, 18280572), (42, 15233810), (60, 10663667), (70, 9140286), (84, 7616905), (105, 6093524), (140, 4570143), (210, 3046762), (420, 1523381)]