18200875

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:125

約数の個数: 64

約数和(自身を含む): 29712384

約数和(自身を除く): 11511509

約数列:

[1, 5, 7, 11, 25, 31, 35, 55, 61, 77, 125, 155, 175, 217, 275, 305, 341, 385, 427, 671, 775, 875, 1085, 1375, 1525, 1705, 1891, 1925, 2135, 2387, 3355, 3875, 4697, 5425, 7625, 8525, 9455, 9625, 10675, 11935, 13237, 16775, 20801, 23485, 27125, 42625, 47275, 53375, 59675, 66185, 83875, 104005, 117425, 145607, 236375, 298375, 330925, 520025, 587125, 728035, 1654625, 2600125, 3640175, 18200875]

約数ペア:

[(1, 18200875), (5, 3640175), (7, 2600125), (11, 1654625), (25, 728035), (31, 587125), (35, 520025), (55, 330925), (61, 298375), (77, 236375), (125, 145607), (155, 117425), (175, 104005), (217, 83875), (275, 66185), (305, 59675), (341, 53375), (385, 47275), (427, 42625), (671, 27125), (775, 23485), (875, 20801), (1085, 16775), (1375, 13237), (1525, 11935), (1705, 10675), (1891, 9625), (1925, 9455), (2135, 8525), (2387, 7625), (3355, 5425), (3875, 4697)]