21171528

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{353}}^1$

素因数の和:396

約数の個数: 144

約数和(自身を含む): 70824780

約数和(自身を除く): 49653252

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 17, 18, 21, 24, 28, 34, 36, 42, 49, 51, 56, 63, 68, 72, 84, 98, 102, 119, 126, 136, 147, 153, 168, 196, 204, 238, 252, 294, 306, 353, 357, 392, 408, 441, 476, 504, 588, 612, 706, 714, 833, 882, 952, 1059, 1071, 1176, 1224, 1412, 1428, 1666, 1764, 2118, 2142, 2471, 2499, 2824, 2856, 3177, 3332, 3528, 4236, 4284, 4942, 4998, 6001, 6354, 6664, 7413, 7497, 8472, 8568, 9884, 9996, 12002, 12708, 14826, 14994, 17297, 18003, 19768, 19992, 22239, 24004, 25416, 29652, 29988, 34594, 36006, 42007, 44478, 48008, 51891, 54009, 59304, 59976, 69188, 72012, 84014, 88956, 103782, 108018, 126021, 138376, 144024, 155673, 168028, 177912, 207564, 216036, 252042, 294049, 311346, 336056, 378063, 415128, 432072, 504084, 588098, 622692, 756126, 882147, 1008168, 1176196, 1245384, 1512252, 1764294, 2352392, 2646441, 3024504, 3528588, 5292882, 7057176, 10585764, 21171528]

約数ペア:

[(1, 21171528), (2, 10585764), (3, 7057176), (4, 5292882), (6, 3528588), (7, 3024504), (8, 2646441), (9, 2352392), (12, 1764294), (14, 1512252), (17, 1245384), (18, 1176196), (21, 1008168), (24, 882147), (28, 756126), (34, 622692), (36, 588098), (42, 504084), (49, 432072), (51, 415128), (56, 378063), (63, 336056), (68, 311346), (72, 294049), (84, 252042), (98, 216036), (102, 207564), (119, 177912), (126, 168028), (136, 155673), (147, 144024), (153, 138376), (168, 126021), (196, 108018), (204, 103782), (238, 88956), (252, 84014), (294, 72012), (306, 69188), (353, 59976), (357, 59304), (392, 54009), (408, 51891), (441, 48008), (476, 44478), (504, 42007), (588, 36006), (612, 34594), (706, 29988), (714, 29652), (833, 25416), (882, 24004), (952, 22239), (1059, 19992), (1071, 19768), (1176, 18003), (1224, 17297), (1412, 14994), (1428, 14826), (1666, 12708), (1764, 12002), (2118, 9996), (2142, 9884), (2471, 8568), (2499, 8472), (2824, 7497), (2856, 7413), (3177, 6664), (3332, 6354), (3528, 6001), (4236, 4998), (4284, 4942)]