217465640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{997}}^1$

素因数の和:1075

約数の個数: 128

約数和(自身を含む): 603590400

約数和(自身を除く): 386124760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 41, 56, 70, 76, 82, 95, 133, 140, 152, 164, 190, 205, 266, 280, 287, 328, 380, 410, 532, 574, 665, 760, 779, 820, 997, 1064, 1148, 1330, 1435, 1558, 1640, 1994, 2296, 2660, 2870, 3116, 3895, 3988, 4985, 5320, 5453, 5740, 6232, 6979, 7790, 7976, 9970, 10906, 11480, 13958, 15580, 18943, 19940, 21812, 27265, 27916, 31160, 34895, 37886, 39880, 40877, 43624, 54530, 55832, 69790, 75772, 81754, 94715, 109060, 132601, 139580, 151544, 163508, 189430, 204385, 218120, 265202, 279160, 286139, 327016, 378860, 408770, 530404, 572278, 663005, 757720, 776663, 817540, 1060808, 1144556, 1326010, 1430695, 1553326, 1635080, 2289112, 2652020, 2861390, 3106652, 3883315, 5304040, 5436641, 5722780, 6213304, 7766630, 10873282, 11445560, 15533260, 21746564, 27183205, 31066520, 43493128, 54366410, 108732820, 217465640]

約数ペア:

[(1, 217465640), (2, 108732820), (4, 54366410), (5, 43493128), (7, 31066520), (8, 27183205), (10, 21746564), (14, 15533260), (19, 11445560), (20, 10873282), (28, 7766630), (35, 6213304), (38, 5722780), (40, 5436641), (41, 5304040), (56, 3883315), (70, 3106652), (76, 2861390), (82, 2652020), (95, 2289112), (133, 1635080), (140, 1553326), (152, 1430695), (164, 1326010), (190, 1144556), (205, 1060808), (266, 817540), (280, 776663), (287, 757720), (328, 663005), (380, 572278), (410, 530404), (532, 408770), (574, 378860), (665, 327016), (760, 286139), (779, 279160), (820, 265202), (997, 218120), (1064, 204385), (1148, 189430), (1330, 163508), (1435, 151544), (1558, 139580), (1640, 132601), (1994, 109060), (2296, 94715), (2660, 81754), (2870, 75772), (3116, 69790), (3895, 55832), (3988, 54530), (4985, 43624), (5320, 40877), (5453, 39880), (5740, 37886), (6232, 34895), (6979, 31160), (7790, 27916), (7976, 27265), (9970, 21812), (10906, 19940), (11480, 18943), (13958, 15580)]