15505580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 34110720

約数和(自身を除く): 18605140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 281, 310, 356, 445, 562, 620, 890, 1124, 1405, 1780, 2759, 2810, 5518, 5620, 8711, 11036, 13795, 17422, 25009, 27590, 34844, 43555, 50018, 55180, 87110, 100036, 125045, 174220, 250090, 500180, 775279, 1550558, 3101116, 3876395, 7752790, 15505580]

約数ペア:

[(1, 15505580), (2, 7752790), (4, 3876395), (5, 3101116), (10, 1550558), (20, 775279), (31, 500180), (62, 250090), (89, 174220), (124, 125045), (155, 100036), (178, 87110), (281, 55180), (310, 50018), (356, 43555), (445, 34844), (562, 27590), (620, 25009), (890, 17422), (1124, 13795), (1405, 11036), (1780, 8711), (2759, 5620), (2810, 5518)]