21459438

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:439

約数の個数: 128

約数和(自身を含む): 64189440

約数和(自身を除く): 42730002

約数列:

[1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 27, 33, 39, 42, 54, 63, 66, 77, 78, 91, 99, 117, 126, 143, 154, 182, 189, 198, 231, 234, 273, 286, 297, 351, 378, 397, 429, 462, 546, 594, 693, 702, 794, 819, 858, 1001, 1191, 1287, 1386, 1638, 2002, 2079, 2382, 2457, 2574, 2779, 3003, 3573, 3861, 4158, 4367, 4914, 5161, 5558, 6006, 7146, 7722, 8337, 8734, 9009, 10322, 10719, 13101, 15483, 16674, 18018, 21438, 25011, 26202, 27027, 30569, 30966, 36127, 39303, 46449, 50022, 54054, 56771, 61138, 72254, 75033, 78606, 91707, 92898, 108381, 113542, 117909, 139347, 150066, 170313, 183414, 216762, 235818, 275121, 278694, 325143, 340626, 397397, 510939, 550242, 650286, 794794, 825363, 975429, 1021878, 1192191, 1532817, 1650726, 1950858, 2384382, 3065634, 3576573, 7153146, 10729719, 21459438]

約数ペア:

[(1, 21459438), (2, 10729719), (3, 7153146), (6, 3576573), (7, 3065634), (9, 2384382), (11, 1950858), (13, 1650726), (14, 1532817), (18, 1192191), (21, 1021878), (22, 975429), (26, 825363), (27, 794794), (33, 650286), (39, 550242), (42, 510939), (54, 397397), (63, 340626), (66, 325143), (77, 278694), (78, 275121), (91, 235818), (99, 216762), (117, 183414), (126, 170313), (143, 150066), (154, 139347), (182, 117909), (189, 113542), (198, 108381), (231, 92898), (234, 91707), (273, 78606), (286, 75033), (297, 72254), (351, 61138), (378, 56771), (397, 54054), (429, 50022), (462, 46449), (546, 39303), (594, 36127), (693, 30966), (702, 30569), (794, 27027), (819, 26202), (858, 25011), (1001, 21438), (1191, 18018), (1287, 16674), (1386, 15483), (1638, 13101), (2002, 10719), (2079, 10322), (2382, 9009), (2457, 8734), (2574, 8337), (2779, 7722), (3003, 7146), (3573, 6006), (3861, 5558), (4158, 5161), (4367, 4914)]