78899420

素因数分解:

$2^2\times 5^1\times {\mathrm{1867}}^1\times {\mathrm{2113}}^1$

素因数の和:3989

約数の個数: 24

約数和(自身を含む): 165855984

約数和(自身を除く): 86956564

約数列:

[1, 2, 4, 5, 10, 20, 1867, 2113, 3734, 4226, 7468, 8452, 9335, 10565, 18670, 21130, 37340, 42260, 3944971, 7889942, 15779884, 19724855, 39449710, 78899420]

約数ペア:

[(1, 78899420), (2, 39449710), (4, 19724855), (5, 15779884), (10, 7889942), (20, 3944971), (1867, 42260), (2113, 37340), (3734, 21130), (4226, 18670), (7468, 10565), (8452, 9335)]