1381280

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 48

約数和(自身を含む): 3333960

約数和(自身を除く): 1952680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 97, 160, 178, 194, 356, 388, 445, 485, 712, 776, 890, 970, 1424, 1552, 1780, 1940, 2848, 3104, 3560, 3880, 7120, 7760, 8633, 14240, 15520, 17266, 34532, 43165, 69064, 86330, 138128, 172660, 276256, 345320, 690640, 1381280]

約数ペア:

[(1, 1381280), (2, 690640), (4, 345320), (5, 276256), (8, 172660), (10, 138128), (16, 86330), (20, 69064), (32, 43165), (40, 34532), (80, 17266), (89, 15520), (97, 14240), (160, 8633), (178, 7760), (194, 7120), (356, 3880), (388, 3560), (445, 3104), (485, 2848), (712, 1940), (776, 1780), (890, 1552), (970, 1424)]