18995560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15319}}^1$

素因数の和:15361

約数の個数: 32

約数和(自身を含む): 44121600

約数和(自身を除く): 25126040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15319, 30638, 61276, 76595, 122552, 153190, 306380, 474889, 612760, 949778, 1899556, 2374445, 3799112, 4748890, 9497780, 18995560]

約数ペア:

[(1, 18995560), (2, 9497780), (4, 4748890), (5, 3799112), (8, 2374445), (10, 1899556), (20, 949778), (31, 612760), (40, 474889), (62, 306380), (124, 153190), (155, 122552), (248, 76595), (310, 61276), (620, 30638), (1240, 15319)]