72987880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{260671}}^1$

素因数の和:260689

約数の個数: 32

約数和(自身を含む): 187683840

約数和(自身を除く): 114695960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 260671, 521342, 1042684, 1303355, 1824697, 2085368, 2606710, 3649394, 5213420, 7298788, 9123485, 10426840, 14597576, 18246970, 36493940, 72987880]

約数ペア:

[(1, 72987880), (2, 36493940), (4, 18246970), (5, 14597576), (7, 10426840), (8, 9123485), (10, 7298788), (14, 5213420), (20, 3649394), (28, 2606710), (35, 2085368), (40, 1824697), (56, 1303355), (70, 1042684), (140, 521342), (280, 260671)]