280240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 678528

約数和(自身を除く): 398288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 113, 124, 155, 226, 248, 310, 452, 496, 565, 620, 904, 1130, 1240, 1808, 2260, 2480, 3503, 4520, 7006, 9040, 14012, 17515, 28024, 35030, 56048, 70060, 140120, 280240]

約数ペア:

[(1, 280240), (2, 140120), (4, 70060), (5, 56048), (8, 35030), (10, 28024), (16, 17515), (20, 14012), (31, 9040), (40, 7006), (62, 4520), (80, 3503), (113, 2480), (124, 2260), (155, 1808), (226, 1240), (248, 1130), (310, 904), (452, 620), (496, 565)]