640731280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1144163}}^1$

素因数の和:1144183

約数の個数: 40

約数和(自身を含む): 1702516032

約数和(自身を除く): 1061784752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1144163, 2288326, 4576652, 5720815, 8009141, 9153304, 11441630, 16018282, 18306608, 22883260, 32036564, 40045705, 45766520, 64073128, 80091410, 91533040, 128146256, 160182820, 320365640, 640731280]

約数ペア:

[(1, 640731280), (2, 320365640), (4, 160182820), (5, 128146256), (7, 91533040), (8, 80091410), (10, 64073128), (14, 45766520), (16, 40045705), (20, 32036564), (28, 22883260), (35, 18306608), (40, 16018282), (56, 11441630), (70, 9153304), (80, 8009141), (112, 5720815), (140, 4576652), (280, 2288326), (560, 1144163)]