13780120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11113}}^1$

素因数の和:11155

約数の個数: 32

約数和(自身を含む): 32008320

約数和(自身を除く): 18228200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 11113, 22226, 44452, 55565, 88904, 111130, 222260, 344503, 444520, 689006, 1378012, 1722515, 2756024, 3445030, 6890060, 13780120]

約数ペア:

[(1, 13780120), (2, 6890060), (4, 3445030), (5, 2756024), (8, 1722515), (10, 1378012), (20, 689006), (31, 444520), (40, 344503), (62, 222260), (124, 111130), (155, 88904), (248, 55565), (310, 44452), (620, 22226), (1240, 11113)]