21821268

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 65499840

約数和(自身を除く): 43678572

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 37, 42, 49, 51, 59, 68, 74, 84, 98, 102, 111, 118, 119, 147, 148, 177, 196, 204, 222, 236, 238, 259, 294, 354, 357, 413, 444, 476, 518, 588, 629, 708, 714, 777, 826, 833, 1003, 1036, 1239, 1258, 1428, 1554, 1652, 1666, 1813, 1887, 2006, 2183, 2478, 2499, 2516, 2891, 3009, 3108, 3332, 3626, 3774, 4012, 4366, 4403, 4956, 4998, 5439, 5782, 6018, 6549, 7021, 7252, 7548, 8673, 8732, 8806, 9996, 10878, 11564, 12036, 13098, 13209, 14042, 15281, 17346, 17612, 21063, 21756, 26196, 26418, 28084, 30562, 30821, 34692, 37111, 42126, 45843, 49147, 52836, 61124, 61642, 74222, 84252, 91686, 92463, 98294, 106967, 111333, 123284, 147441, 148444, 183372, 184926, 196588, 213934, 222666, 259777, 294882, 320901, 369852, 427868, 445332, 519554, 589764, 641802, 779331, 1039108, 1283604, 1558662, 1818439, 3117324, 3636878, 5455317, 7273756, 10910634, 21821268]

約数ペア:

[(1, 21821268), (2, 10910634), (3, 7273756), (4, 5455317), (6, 3636878), (7, 3117324), (12, 1818439), (14, 1558662), (17, 1283604), (21, 1039108), (28, 779331), (34, 641802), (37, 589764), (42, 519554), (49, 445332), (51, 427868), (59, 369852), (68, 320901), (74, 294882), (84, 259777), (98, 222666), (102, 213934), (111, 196588), (118, 184926), (119, 183372), (147, 148444), (148, 147441), (177, 123284), (196, 111333), (204, 106967), (222, 98294), (236, 92463), (238, 91686), (259, 84252), (294, 74222), (354, 61642), (357, 61124), (413, 52836), (444, 49147), (476, 45843), (518, 42126), (588, 37111), (629, 34692), (708, 30821), (714, 30562), (777, 28084), (826, 26418), (833, 26196), (1003, 21756), (1036, 21063), (1239, 17612), (1258, 17346), (1428, 15281), (1554, 14042), (1652, 13209), (1666, 13098), (1813, 12036), (1887, 11564), (2006, 10878), (2183, 9996), (2478, 8806), (2499, 8732), (2516, 8673), (2891, 7548), (3009, 7252), (3108, 7021), (3332, 6549), (3626, 6018), (3774, 5782), (4012, 5439), (4366, 4998), (4403, 4956)]