640416

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{953}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 1923264

約数和(自身を除く): 1282848

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672, 953, 1906, 2859, 3812, 5718, 6671, 7624, 11436, 13342, 15248, 20013, 22872, 26684, 30496, 40026, 45744, 53368, 80052, 91488, 106736, 160104, 213472, 320208, 640416]

約数ペア:

[(1, 640416), (2, 320208), (3, 213472), (4, 160104), (6, 106736), (7, 91488), (8, 80052), (12, 53368), (14, 45744), (16, 40026), (21, 30496), (24, 26684), (28, 22872), (32, 20013), (42, 15248), (48, 13342), (56, 11436), (84, 7624), (96, 6671), (112, 5718), (168, 3812), (224, 2859), (336, 1906), (672, 953)]