28468420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 61725888

約数和(自身を除く): 33257468

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 107, 212, 214, 251, 265, 428, 502, 530, 535, 1004, 1060, 1070, 1255, 2140, 2510, 5020, 5671, 11342, 13303, 22684, 26606, 26857, 28355, 53212, 53714, 56710, 66515, 107428, 113420, 133030, 134285, 266060, 268570, 537140, 1423421, 2846842, 5693684, 7117105, 14234210, 28468420]

約数ペア:

[(1, 28468420), (2, 14234210), (4, 7117105), (5, 5693684), (10, 2846842), (20, 1423421), (53, 537140), (106, 268570), (107, 266060), (212, 134285), (214, 133030), (251, 113420), (265, 107428), (428, 66515), (502, 56710), (530, 53714), (535, 53212), (1004, 28355), (1060, 26857), (1070, 26606), (1255, 22684), (2140, 13303), (2510, 11342), (5020, 5671)]