21216528

素因数分解:

$2^4\times 3^2\times {\mathrm{251}}^1\times {\mathrm{587}}^1$

素因数の和:852

約数の個数: 60

約数和(自身を含む): 59714928

約数和(自身を除く): 38498400

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 251, 502, 587, 753, 1004, 1174, 1506, 1761, 2008, 2259, 2348, 3012, 3522, 4016, 4518, 4696, 5283, 6024, 7044, 9036, 9392, 10566, 12048, 14088, 18072, 21132, 28176, 36144, 42264, 84528, 147337, 294674, 442011, 589348, 884022, 1178696, 1326033, 1768044, 2357392, 2652066, 3536088, 5304132, 7072176, 10608264, 21216528]

約数ペア:

[(1, 21216528), (2, 10608264), (3, 7072176), (4, 5304132), (6, 3536088), (8, 2652066), (9, 2357392), (12, 1768044), (16, 1326033), (18, 1178696), (24, 884022), (36, 589348), (48, 442011), (72, 294674), (144, 147337), (251, 84528), (502, 42264), (587, 36144), (753, 28176), (1004, 21132), (1174, 18072), (1506, 14088), (1761, 12048), (2008, 10566), (2259, 9392), (2348, 9036), (3012, 7044), (3522, 6024), (4016, 5283), (4518, 4696)]