19163375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 30209088

約数和(自身を除く): 11045713

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 121, 125, 175, 181, 275, 385, 605, 847, 875, 905, 1267, 1375, 1925, 1991, 3025, 4235, 4525, 6335, 9625, 9955, 13937, 15125, 21175, 21901, 22625, 31675, 49775, 69685, 105875, 109505, 153307, 158375, 248875, 348425, 547525, 766535, 1742125, 2737625, 3832675, 19163375]

約数ペア:

[(1, 19163375), (5, 3832675), (7, 2737625), (11, 1742125), (25, 766535), (35, 547525), (55, 348425), (77, 248875), (121, 158375), (125, 153307), (175, 109505), (181, 105875), (275, 69685), (385, 49775), (605, 31675), (847, 22625), (875, 21901), (905, 21175), (1267, 15125), (1375, 13937), (1925, 9955), (1991, 9625), (3025, 6335), (4235, 4525)]