15640120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12613}}^1$

素因数の和:12655

約数の個数: 32

約数和(自身を含む): 36328320

約数和(自身を除く): 20688200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 12613, 25226, 50452, 63065, 100904, 126130, 252260, 391003, 504520, 782006, 1564012, 1955015, 3128024, 3910030, 7820060, 15640120]

約数ペア:

[(1, 15640120), (2, 7820060), (4, 3910030), (5, 3128024), (8, 1955015), (10, 1564012), (20, 782006), (31, 504520), (40, 391003), (62, 252260), (124, 126130), (155, 100904), (248, 63065), (310, 50452), (620, 25226), (1240, 12613)]