21031108

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 47037312

約数和(自身を除く): 26006204

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 34, 46, 68, 92, 113, 119, 161, 226, 238, 289, 322, 391, 452, 476, 578, 644, 782, 791, 1156, 1564, 1582, 1921, 2023, 2599, 2737, 3164, 3842, 4046, 5198, 5474, 6647, 7684, 8092, 10396, 10948, 13294, 13447, 18193, 26588, 26894, 32657, 36386, 44183, 46529, 53788, 65314, 72772, 88366, 93058, 130628, 176732, 186116, 228599, 309281, 457198, 618562, 751111, 914396, 1237124, 1502222, 3004444, 5257777, 10515554, 21031108]

約数ペア:

[(1, 21031108), (2, 10515554), (4, 5257777), (7, 3004444), (14, 1502222), (17, 1237124), (23, 914396), (28, 751111), (34, 618562), (46, 457198), (68, 309281), (92, 228599), (113, 186116), (119, 176732), (161, 130628), (226, 93058), (238, 88366), (289, 72772), (322, 65314), (391, 53788), (452, 46529), (476, 44183), (578, 36386), (644, 32657), (782, 26894), (791, 26588), (1156, 18193), (1564, 13447), (1582, 13294), (1921, 10948), (2023, 10396), (2599, 8092), (2737, 7684), (3164, 6647), (3842, 5474), (4046, 5198)]