19993750

素因数分解:

$2^1\times 5^5\times 7^1\times {\mathrm{457}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 42934752

約数和(自身を除く): 22941002

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 125, 175, 250, 350, 457, 625, 875, 914, 1250, 1750, 2285, 3125, 3199, 4375, 4570, 6250, 6398, 8750, 11425, 15995, 21875, 22850, 31990, 43750, 57125, 79975, 114250, 159950, 285625, 399875, 571250, 799750, 1428125, 1999375, 2856250, 3998750, 9996875, 19993750]

約数ペア:

[(1, 19993750), (2, 9996875), (5, 3998750), (7, 2856250), (10, 1999375), (14, 1428125), (25, 799750), (35, 571250), (50, 399875), (70, 285625), (125, 159950), (175, 114250), (250, 79975), (350, 57125), (457, 43750), (625, 31990), (875, 22850), (914, 21875), (1250, 15995), (1750, 11425), (2285, 8750), (3125, 6398), (3199, 6250), (4375, 4570)]