399367020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{512009}}^1$

素因数の和:512034

約数の個数: 48

約数和(自身を含む): 1204247520

約数和(自身を除く): 804880500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 512009, 1024018, 1536027, 2048036, 2560045, 3072054, 5120090, 6144108, 6656117, 7680135, 10240180, 13312234, 15360270, 19968351, 26624468, 30720540, 33280585, 39936702, 66561170, 79873404, 99841755, 133122340, 199683510, 399367020]

約数ペア:

[(1, 399367020), (2, 199683510), (3, 133122340), (4, 99841755), (5, 79873404), (6, 66561170), (10, 39936702), (12, 33280585), (13, 30720540), (15, 26624468), (20, 19968351), (26, 15360270), (30, 13312234), (39, 10240180), (52, 7680135), (60, 6656117), (65, 6144108), (78, 5120090), (130, 3072054), (156, 2560045), (195, 2048036), (260, 1536027), (390, 1024018), (780, 512009)]