18706528

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 39435984

約数和(自身を除く): 20729456

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 137, 251, 272, 274, 502, 544, 548, 1004, 1096, 2008, 2192, 2329, 4016, 4267, 4384, 4658, 8032, 8534, 9316, 17068, 18632, 34136, 34387, 37264, 68272, 68774, 74528, 136544, 137548, 275096, 550192, 584579, 1100384, 1169158, 2338316, 4676632, 9353264, 18706528]

約数ペア:

[(1, 18706528), (2, 9353264), (4, 4676632), (8, 2338316), (16, 1169158), (17, 1100384), (32, 584579), (34, 550192), (68, 275096), (136, 137548), (137, 136544), (251, 74528), (272, 68774), (274, 68272), (502, 37264), (544, 34387), (548, 34136), (1004, 18632), (1096, 17068), (2008, 9316), (2192, 8534), (2329, 8032), (4016, 4658), (4267, 4384)]