21062600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8101}}^1$

素因数の和:8130

約数の個数: 48

約数和(自身を含む): 52744020

約数和(自身を除く): 31681420

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8101, 16202, 32404, 40505, 64808, 81010, 105313, 162020, 202525, 210626, 324040, 405050, 421252, 526565, 810100, 842504, 1053130, 1620200, 2106260, 2632825, 4212520, 5265650, 10531300, 21062600]

約数ペア:

[(1, 21062600), (2, 10531300), (4, 5265650), (5, 4212520), (8, 2632825), (10, 2106260), (13, 1620200), (20, 1053130), (25, 842504), (26, 810100), (40, 526565), (50, 421252), (52, 405050), (65, 324040), (100, 210626), (104, 202525), (130, 162020), (200, 105313), (260, 81010), (325, 64808), (520, 40505), (650, 32404), (1300, 16202), (2600, 8101)]