18938465

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 9366175

約数列:

[1, 5, 7, 13, 35, 65, 91, 107, 389, 455, 535, 749, 1391, 1945, 2723, 3745, 5057, 6955, 9737, 13615, 25285, 35399, 41623, 48685, 176995, 208115, 291361, 541099, 1456805, 2705495, 3787693, 18938465]

約数ペア:

[(1, 18938465), (5, 3787693), (7, 2705495), (13, 1456805), (35, 541099), (65, 291361), (91, 208115), (107, 176995), (389, 48685), (455, 41623), (535, 35399), (749, 25285), (1391, 13615), (1945, 9737), (2723, 6955), (3745, 5057)]