2660720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:513

約数の個数: 40

約数和(自身を含む): 6279360

約数和(自身を除く): 3618640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 421, 632, 790, 842, 1264, 1580, 1684, 2105, 3160, 3368, 4210, 6320, 6736, 8420, 16840, 33259, 33680, 66518, 133036, 166295, 266072, 332590, 532144, 665180, 1330360, 2660720]

約数ペア:

[(1, 2660720), (2, 1330360), (4, 665180), (5, 532144), (8, 332590), (10, 266072), (16, 166295), (20, 133036), (40, 66518), (79, 33680), (80, 33259), (158, 16840), (316, 8420), (395, 6736), (421, 6320), (632, 4210), (790, 3368), (842, 3160), (1264, 2105), (1580, 1684)]