640696455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{4973}}^1$

素因数の和:5400

約数の個数: 48

約数和(自身を含む): 1272548160

約数和(自身を除く): 631851705

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 409, 1227, 2045, 2863, 3681, 4973, 6135, 8589, 14315, 14919, 18405, 24865, 25767, 34811, 42945, 44757, 74595, 104433, 128835, 174055, 223785, 313299, 522165, 1566495, 2033957, 6101871, 10169785, 14237699, 18305613, 30509355, 42713097, 71188495, 91528065, 128139291, 213565485, 640696455]

約数ペア:

[(1, 640696455), (3, 213565485), (5, 128139291), (7, 91528065), (9, 71188495), (15, 42713097), (21, 30509355), (35, 18305613), (45, 14237699), (63, 10169785), (105, 6101871), (315, 2033957), (409, 1566495), (1227, 522165), (2045, 313299), (2863, 223785), (3681, 174055), (4973, 128835), (6135, 104433), (8589, 74595), (14315, 44757), (14919, 42945), (18405, 34811), (24865, 25767)]