90618640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23117}}^1$

素因数の和:23144

約数の個数: 60

約数和(自身を含む): 245097036

約数和(自身を除く): 154478396

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 23117, 46234, 92468, 115585, 161819, 184936, 231170, 323638, 369872, 462340, 647276, 809095, 924680, 1132733, 1294552, 1618190, 1849360, 2265466, 2589104, 3236380, 4530932, 5663665, 6472760, 9061864, 11327330, 12945520, 18123728, 22654660, 45309320, 90618640]

約数ペア:

[(1, 90618640), (2, 45309320), (4, 22654660), (5, 18123728), (7, 12945520), (8, 11327330), (10, 9061864), (14, 6472760), (16, 5663665), (20, 4530932), (28, 3236380), (35, 2589104), (40, 2265466), (49, 1849360), (56, 1618190), (70, 1294552), (80, 1132733), (98, 924680), (112, 809095), (140, 647276), (196, 462340), (245, 369872), (280, 323638), (392, 231170), (490, 184936), (560, 161819), (784, 115585), (980, 92468), (1960, 46234), (3920, 23117)]