21500172

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:132

約数の個数: 108

約数和(自身を含む): 62014680

約数和(自身を除く): 40514508

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 19, 34, 36, 38, 43, 51, 57, 68, 76, 86, 102, 114, 129, 153, 171, 172, 204, 228, 258, 306, 323, 342, 387, 516, 612, 646, 684, 731, 774, 817, 969, 1292, 1462, 1548, 1634, 1849, 1938, 2193, 2451, 2907, 2924, 3268, 3698, 3876, 4386, 4902, 5547, 5814, 6579, 7353, 7396, 8772, 9804, 11094, 11628, 13158, 13889, 14706, 16641, 22188, 26316, 27778, 29412, 31433, 33282, 35131, 41667, 55556, 62866, 66564, 70262, 83334, 94299, 105393, 125001, 125732, 140524, 166668, 188598, 210786, 250002, 282897, 316179, 377196, 421572, 500004, 565794, 597227, 632358, 1131588, 1194454, 1264716, 1791681, 2388908, 3583362, 5375043, 7166724, 10750086, 21500172]

約数ペア:

[(1, 21500172), (2, 10750086), (3, 7166724), (4, 5375043), (6, 3583362), (9, 2388908), (12, 1791681), (17, 1264716), (18, 1194454), (19, 1131588), (34, 632358), (36, 597227), (38, 565794), (43, 500004), (51, 421572), (57, 377196), (68, 316179), (76, 282897), (86, 250002), (102, 210786), (114, 188598), (129, 166668), (153, 140524), (171, 125732), (172, 125001), (204, 105393), (228, 94299), (258, 83334), (306, 70262), (323, 66564), (342, 62866), (387, 55556), (516, 41667), (612, 35131), (646, 33282), (684, 31433), (731, 29412), (774, 27778), (817, 26316), (969, 22188), (1292, 16641), (1462, 14706), (1548, 13889), (1634, 13158), (1849, 11628), (1938, 11094), (2193, 9804), (2451, 8772), (2907, 7396), (2924, 7353), (3268, 6579), (3698, 5814), (3876, 5547), (4386, 4902)]