640656

素因数分解:

$2^4\times 3^3\times {\mathrm{1483}}^1$

素因数の和:1500

約数の個数: 40

約数和(自身を含む): 1840160

約数和(自身を除く): 1199504

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432, 1483, 2966, 4449, 5932, 8898, 11864, 13347, 17796, 23728, 26694, 35592, 40041, 53388, 71184, 80082, 106776, 160164, 213552, 320328, 640656]

約数ペア:

[(1, 640656), (2, 320328), (3, 213552), (4, 160164), (6, 106776), (8, 80082), (9, 71184), (12, 53388), (16, 40041), (18, 35592), (24, 26694), (27, 23728), (36, 17796), (48, 13347), (54, 11864), (72, 8898), (108, 5932), (144, 4449), (216, 2966), (432, 1483)]