18721885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1789}}^1$

素因数の和:1837

約数の個数: 32

約数和(自身を含む): 28869120

約数和(自身を除く): 10147235

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 161, 299, 455, 805, 1495, 1789, 2093, 8945, 10465, 12523, 23257, 41147, 62615, 116285, 162799, 205735, 288029, 534911, 813995, 1440145, 2674555, 3744377, 18721885]

約数ペア:

[(1, 18721885), (5, 3744377), (7, 2674555), (13, 1440145), (23, 813995), (35, 534911), (65, 288029), (91, 205735), (115, 162799), (161, 116285), (299, 62615), (455, 41147), (805, 23257), (1495, 12523), (1789, 10465), (2093, 8945)]