20639640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24571}}^1$

素因数の和:24592

約数の個数: 64

約数和(自身を含む): 70767360

約数和(自身を除く): 50127720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24571, 49142, 73713, 98284, 122855, 147426, 171997, 196568, 245710, 294852, 343994, 368565, 491420, 515991, 589704, 687988, 737130, 859985, 982840, 1031982, 1375976, 1474260, 1719970, 2063964, 2579955, 2948520, 3439940, 4127928, 5159910, 6879880, 10319820, 20639640]

約数ペア:

[(1, 20639640), (2, 10319820), (3, 6879880), (4, 5159910), (5, 4127928), (6, 3439940), (7, 2948520), (8, 2579955), (10, 2063964), (12, 1719970), (14, 1474260), (15, 1375976), (20, 1031982), (21, 982840), (24, 859985), (28, 737130), (30, 687988), (35, 589704), (40, 515991), (42, 491420), (56, 368565), (60, 343994), (70, 294852), (84, 245710), (105, 196568), (120, 171997), (140, 147426), (168, 122855), (210, 98284), (280, 73713), (420, 49142), (840, 24571)]