21665490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:224

約数の個数: 128

約数和(自身を含む): 66189312

約数和(自身を除く): 44523822

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 83, 105, 110, 113, 154, 165, 166, 210, 226, 231, 249, 330, 339, 385, 415, 462, 498, 565, 581, 678, 770, 791, 830, 913, 1130, 1155, 1162, 1243, 1245, 1582, 1695, 1743, 1826, 2310, 2373, 2486, 2490, 2739, 2905, 3390, 3486, 3729, 3955, 4565, 4746, 5478, 5810, 6215, 6391, 7458, 7910, 8701, 8715, 9130, 9379, 11865, 12430, 12782, 13695, 17402, 17430, 18645, 18758, 19173, 23730, 26103, 27390, 28137, 31955, 37290, 38346, 43505, 46895, 52206, 56274, 63910, 65653, 87010, 93790, 95865, 103169, 130515, 131306, 140685, 191730, 196959, 206338, 261030, 281370, 309507, 328265, 393918, 515845, 619014, 656530, 722183, 984795, 1031690, 1444366, 1547535, 1969590, 2166549, 3095070, 3610915, 4333098, 7221830, 10832745, 21665490]

約数ペア:

[(1, 21665490), (2, 10832745), (3, 7221830), (5, 4333098), (6, 3610915), (7, 3095070), (10, 2166549), (11, 1969590), (14, 1547535), (15, 1444366), (21, 1031690), (22, 984795), (30, 722183), (33, 656530), (35, 619014), (42, 515845), (55, 393918), (66, 328265), (70, 309507), (77, 281370), (83, 261030), (105, 206338), (110, 196959), (113, 191730), (154, 140685), (165, 131306), (166, 130515), (210, 103169), (226, 95865), (231, 93790), (249, 87010), (330, 65653), (339, 63910), (385, 56274), (415, 52206), (462, 46895), (498, 43505), (565, 38346), (581, 37290), (678, 31955), (770, 28137), (791, 27390), (830, 26103), (913, 23730), (1130, 19173), (1155, 18758), (1162, 18645), (1243, 17430), (1245, 17402), (1582, 13695), (1695, 12782), (1743, 12430), (1826, 11865), (2310, 9379), (2373, 9130), (2486, 8715), (2490, 8701), (2739, 7910), (2905, 7458), (3390, 6391), (3486, 6215), (3729, 5810), (3955, 5478), (4565, 4746)]