20886472

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 44712000

約数和(自身を除く): 23825528

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 59, 68, 76, 118, 136, 137, 152, 236, 274, 323, 472, 548, 646, 1003, 1096, 1121, 1292, 2006, 2242, 2329, 2584, 2603, 4012, 4484, 4658, 5206, 8024, 8083, 8968, 9316, 10412, 16166, 18632, 19057, 20824, 32332, 38114, 44251, 64664, 76228, 88502, 137411, 152456, 153577, 177004, 274822, 307154, 354008, 549644, 614308, 1099288, 1228616, 2610809, 5221618, 10443236, 20886472]

約数ペア:

[(1, 20886472), (2, 10443236), (4, 5221618), (8, 2610809), (17, 1228616), (19, 1099288), (34, 614308), (38, 549644), (59, 354008), (68, 307154), (76, 274822), (118, 177004), (136, 153577), (137, 152456), (152, 137411), (236, 88502), (274, 76228), (323, 64664), (472, 44251), (548, 38114), (646, 32332), (1003, 20824), (1096, 19057), (1121, 18632), (1292, 16166), (2006, 10412), (2242, 9316), (2329, 8968), (2584, 8083), (2603, 8024), (4012, 5206), (4484, 4658)]