21057288

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 65214720

約数和(自身を除く): 44157432

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 51, 56, 68, 73, 84, 101, 102, 119, 136, 146, 168, 202, 204, 219, 238, 292, 303, 357, 404, 408, 438, 476, 511, 584, 606, 707, 714, 808, 876, 952, 1022, 1212, 1241, 1414, 1428, 1533, 1717, 1752, 2044, 2121, 2424, 2482, 2828, 2856, 3066, 3434, 3723, 4088, 4242, 4964, 5151, 5656, 6132, 6868, 7373, 7446, 8484, 8687, 9928, 10302, 12019, 12264, 13736, 14746, 14892, 16968, 17374, 20604, 22119, 24038, 26061, 29492, 29784, 34748, 36057, 41208, 44238, 48076, 51611, 52122, 58984, 69496, 72114, 88476, 96152, 103222, 104244, 125341, 144228, 154833, 176952, 206444, 208488, 250682, 288456, 309666, 376023, 412888, 501364, 619332, 752046, 877387, 1002728, 1238664, 1504092, 1754774, 2632161, 3008184, 3509548, 5264322, 7019096, 10528644, 21057288]

約数ペア:

[(1, 21057288), (2, 10528644), (3, 7019096), (4, 5264322), (6, 3509548), (7, 3008184), (8, 2632161), (12, 1754774), (14, 1504092), (17, 1238664), (21, 1002728), (24, 877387), (28, 752046), (34, 619332), (42, 501364), (51, 412888), (56, 376023), (68, 309666), (73, 288456), (84, 250682), (101, 208488), (102, 206444), (119, 176952), (136, 154833), (146, 144228), (168, 125341), (202, 104244), (204, 103222), (219, 96152), (238, 88476), (292, 72114), (303, 69496), (357, 58984), (404, 52122), (408, 51611), (438, 48076), (476, 44238), (511, 41208), (584, 36057), (606, 34748), (707, 29784), (714, 29492), (808, 26061), (876, 24038), (952, 22119), (1022, 20604), (1212, 17374), (1241, 16968), (1414, 14892), (1428, 14746), (1533, 13736), (1717, 12264), (1752, 12019), (2044, 10302), (2121, 9928), (2424, 8687), (2482, 8484), (2828, 7446), (2856, 7373), (3066, 6868), (3434, 6132), (3723, 5656), (4088, 5151), (4242, 4964)]