31280240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12613}}^1$

素因数の和:12657

約数の個数: 40

約数和(自身を含む): 75078528

約数和(自身を除く): 43798288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 12613, 25226, 50452, 63065, 100904, 126130, 201808, 252260, 391003, 504520, 782006, 1009040, 1564012, 1955015, 3128024, 3910030, 6256048, 7820060, 15640120, 31280240]

約数ペア:

[(1, 31280240), (2, 15640120), (4, 7820060), (5, 6256048), (8, 3910030), (10, 3128024), (16, 1955015), (20, 1564012), (31, 1009040), (40, 782006), (62, 504520), (80, 391003), (124, 252260), (155, 201808), (248, 126130), (310, 100904), (496, 63065), (620, 50452), (1240, 25226), (2480, 12613)]