664388720

素因数分解:

$2^4\times 5^1\times {\mathrm{1283}}^1\times {\mathrm{6473}}^1$

素因数の和:7769

約数の個数: 40

約数和(自身を含む): 1546146576

約数和(自身を除く): 881757856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1283, 2566, 5132, 6415, 6473, 10264, 12830, 12946, 20528, 25660, 25892, 32365, 51320, 51784, 64730, 102640, 103568, 129460, 258920, 517840, 8304859, 16609718, 33219436, 41524295, 66438872, 83048590, 132877744, 166097180, 332194360, 664388720]

約数ペア:

[(1, 664388720), (2, 332194360), (4, 166097180), (5, 132877744), (8, 83048590), (10, 66438872), (16, 41524295), (20, 33219436), (40, 16609718), (80, 8304859), (1283, 517840), (2566, 258920), (5132, 129460), (6415, 103568), (6473, 102640), (10264, 64730), (12830, 51784), (12946, 51320), (20528, 32365), (25660, 25892)]