20739690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4903}}^1$

素因数の和:4963

約数の個数: 48

約数和(自身を含む): 55081728

約数和(自身を除く): 34342038

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 47, 90, 94, 141, 235, 282, 423, 470, 705, 846, 1410, 2115, 4230, 4903, 9806, 14709, 24515, 29418, 44127, 49030, 73545, 88254, 147090, 220635, 230441, 441270, 460882, 691323, 1152205, 1382646, 2073969, 2304410, 3456615, 4147938, 6913230, 10369845, 20739690]

約数ペア:

[(1, 20739690), (2, 10369845), (3, 6913230), (5, 4147938), (6, 3456615), (9, 2304410), (10, 2073969), (15, 1382646), (18, 1152205), (30, 691323), (45, 460882), (47, 441270), (90, 230441), (94, 220635), (141, 147090), (235, 88254), (282, 73545), (423, 49030), (470, 44127), (705, 29418), (846, 24515), (1410, 14709), (2115, 9806), (4230, 4903)]