80916640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10321}}^1$

素因数の和:10350

約数の個数: 72

約数和(自身を含む): 222397812

約数和(自身を除く): 141481172

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, 3920, 7840, 10321, 20642, 41284, 51605, 72247, 82568, 103210, 144494, 165136, 206420, 288988, 330272, 361235, 412840, 505729, 577976, 722470, 825680, 1011458, 1155952, 1444940, 1651360, 2022916, 2311904, 2528645, 2889880, 4045832, 5057290, 5779760, 8091664, 10114580, 11559520, 16183328, 20229160, 40458320, 80916640]

約数ペア:

[(1, 80916640), (2, 40458320), (4, 20229160), (5, 16183328), (7, 11559520), (8, 10114580), (10, 8091664), (14, 5779760), (16, 5057290), (20, 4045832), (28, 2889880), (32, 2528645), (35, 2311904), (40, 2022916), (49, 1651360), (56, 1444940), (70, 1155952), (80, 1011458), (98, 825680), (112, 722470), (140, 577976), (160, 505729), (196, 412840), (224, 361235), (245, 330272), (280, 288988), (392, 206420), (490, 165136), (560, 144494), (784, 103210), (980, 82568), (1120, 72247), (1568, 51605), (1960, 41284), (3920, 20642), (7840, 10321)]