18137511

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13731417

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 251, 259, 279, 333, 651, 753, 777, 1147, 1757, 1953, 2259, 2331, 3441, 5271, 7781, 8029, 9287, 10323, 15813, 23343, 24087, 27861, 54467, 65009, 70029, 72261, 83583, 163401, 195027, 287897, 490203, 585081, 863691, 2015279, 2591073, 6045837, 18137511]

約数ペア:

[(1, 18137511), (3, 6045837), (7, 2591073), (9, 2015279), (21, 863691), (31, 585081), (37, 490203), (63, 287897), (93, 195027), (111, 163401), (217, 83583), (251, 72261), (259, 70029), (279, 65009), (333, 54467), (651, 27861), (753, 24087), (777, 23343), (1147, 15813), (1757, 10323), (1953, 9287), (2259, 8029), (2331, 7781), (3441, 5271)]