19815087994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1\times {\mathrm{17581}}^1$

素因数の和:18310

約数の個数: 32

約数和(自身を含む): 32538796416

約数和(自身を除く): 12723708422

約数列:

[1, 2, 13, 26, 67, 134, 647, 871, 1294, 1742, 8411, 16822, 17581, 35162, 43349, 86698, 228553, 457106, 563537, 1127074, 1177927, 2355854, 11374907, 15313051, 22749814, 30626102, 147873791, 295747582, 762118769, 1524237538, 9907543997, 19815087994]

約数ペア:

[(1, 19815087994), (2, 9907543997), (13, 1524237538), (26, 762118769), (67, 295747582), (134, 147873791), (647, 30626102), (871, 22749814), (1294, 15313051), (1742, 11374907), (8411, 2355854), (16822, 1177927), (17581, 1127074), (35162, 563537), (43349, 457106), (86698, 228553)]