13042940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 28680960

約数和(自身を除く): 15638020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 109, 124, 155, 193, 218, 310, 386, 436, 545, 620, 772, 965, 1090, 1930, 2180, 3379, 3860, 5983, 6758, 11966, 13516, 16895, 21037, 23932, 29915, 33790, 42074, 59830, 67580, 84148, 105185, 119660, 210370, 420740, 652147, 1304294, 2608588, 3260735, 6521470, 13042940]

約数ペア:

[(1, 13042940), (2, 6521470), (4, 3260735), (5, 2608588), (10, 1304294), (20, 652147), (31, 420740), (62, 210370), (109, 119660), (124, 105185), (155, 84148), (193, 67580), (218, 59830), (310, 42074), (386, 33790), (436, 29915), (545, 23932), (620, 21037), (772, 16895), (965, 13516), (1090, 11966), (1930, 6758), (2180, 5983), (3379, 3860)]