21123060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2647}}^1$

素因数の和:2685

約数の個数: 96

約数和(自身を含む): 71178240

約数和(自身を除く): 50055180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2647, 2660, 3990, 5294, 7941, 7980, 10588, 13235, 15882, 18529, 26470, 31764, 37058, 39705, 50293, 52940, 55587, 74116, 79410, 92645, 100586, 111174, 150879, 158820, 185290, 201172, 222348, 251465, 277935, 301758, 352051, 370580, 502930, 555870, 603516, 704102, 754395, 1005860, 1056153, 1111740, 1408204, 1508790, 1760255, 2112306, 3017580, 3520510, 4224612, 5280765, 7041020, 10561530, 21123060]

約数ペア:

[(1, 21123060), (2, 10561530), (3, 7041020), (4, 5280765), (5, 4224612), (6, 3520510), (7, 3017580), (10, 2112306), (12, 1760255), (14, 1508790), (15, 1408204), (19, 1111740), (20, 1056153), (21, 1005860), (28, 754395), (30, 704102), (35, 603516), (38, 555870), (42, 502930), (57, 370580), (60, 352051), (70, 301758), (76, 277935), (84, 251465), (95, 222348), (105, 201172), (114, 185290), (133, 158820), (140, 150879), (190, 111174), (210, 100586), (228, 92645), (266, 79410), (285, 74116), (380, 55587), (399, 52940), (420, 50293), (532, 39705), (570, 37058), (665, 31764), (798, 26470), (1140, 18529), (1330, 15882), (1596, 13235), (1995, 10588), (2647, 7980), (2660, 7941), (3990, 5294)]