19799871

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{797}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 33295752

約数和(自身を除く): 13495881

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 507, 637, 797, 1183, 1911, 2391, 3549, 5579, 8281, 10361, 16737, 24843, 31083, 39053, 72527, 117159, 134693, 217581, 404079, 507689, 942851, 1523067, 2828553, 6599957, 19799871]

約数ペア:

[(1, 19799871), (3, 6599957), (7, 2828553), (13, 1523067), (21, 942851), (39, 507689), (49, 404079), (91, 217581), (147, 134693), (169, 117159), (273, 72527), (507, 39053), (637, 31083), (797, 24843), (1183, 16737), (1911, 10361), (2391, 8281), (3549, 5579)]