28780640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{3671}}^1$

素因数の和:3700

約数の個数: 72

約数和(自身を含む): 79116912

約数和(自身を除く): 50336272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3671, 3920, 7342, 7840, 14684, 18355, 25697, 29368, 36710, 51394, 58736, 73420, 102788, 117472, 128485, 146840, 179879, 205576, 256970, 293680, 359758, 411152, 513940, 587360, 719516, 822304, 899395, 1027880, 1439032, 1798790, 2055760, 2878064, 3597580, 4111520, 5756128, 7195160, 14390320, 28780640]

約数ペア:

[(1, 28780640), (2, 14390320), (4, 7195160), (5, 5756128), (7, 4111520), (8, 3597580), (10, 2878064), (14, 2055760), (16, 1798790), (20, 1439032), (28, 1027880), (32, 899395), (35, 822304), (40, 719516), (49, 587360), (56, 513940), (70, 411152), (80, 359758), (98, 293680), (112, 256970), (140, 205576), (160, 179879), (196, 146840), (224, 128485), (245, 117472), (280, 102788), (392, 73420), (490, 58736), (560, 51394), (784, 36710), (980, 29368), (1120, 25697), (1568, 18355), (1960, 14684), (3671, 7840), (3920, 7342)]