21197538

素因数分解:

$2^1\times 3^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:253

約数の個数: 80

約数和(自身を含む): 51749280

約数和(自身を除く): 30551742

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 43, 51, 54, 81, 86, 102, 129, 153, 162, 179, 258, 306, 358, 387, 459, 537, 731, 774, 918, 1074, 1161, 1377, 1462, 1611, 2193, 2322, 2754, 3043, 3222, 3483, 4386, 4833, 6086, 6579, 6966, 7697, 9129, 9666, 13158, 14499, 15394, 18258, 19737, 23091, 27387, 28998, 39474, 46182, 54774, 59211, 69273, 82161, 118422, 130849, 138546, 164322, 207819, 246483, 261698, 392547, 415638, 492966, 623457, 785094, 1177641, 1246914, 2355282, 3532923, 7065846, 10598769, 21197538]

約数ペア:

[(1, 21197538), (2, 10598769), (3, 7065846), (6, 3532923), (9, 2355282), (17, 1246914), (18, 1177641), (27, 785094), (34, 623457), (43, 492966), (51, 415638), (54, 392547), (81, 261698), (86, 246483), (102, 207819), (129, 164322), (153, 138546), (162, 130849), (179, 118422), (258, 82161), (306, 69273), (358, 59211), (387, 54774), (459, 46182), (537, 39474), (731, 28998), (774, 27387), (918, 23091), (1074, 19737), (1161, 18258), (1377, 15394), (1462, 14499), (1611, 13158), (2193, 9666), (2322, 9129), (2754, 7697), (3043, 6966), (3222, 6579), (3483, 6086), (4386, 4833)]