20938288

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1571}}^1$

素因数の和:1610

約数の個数: 60

約数和(自身を含む): 49999032

約数和(自身を除く): 29060744

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 49, 56, 68, 98, 112, 119, 136, 196, 238, 272, 392, 476, 784, 833, 952, 1571, 1666, 1904, 3142, 3332, 6284, 6664, 10997, 12568, 13328, 21994, 25136, 26707, 43988, 53414, 76979, 87976, 106828, 153958, 175952, 186949, 213656, 307916, 373898, 427312, 615832, 747796, 1231664, 1308643, 1495592, 2617286, 2991184, 5234572, 10469144, 20938288]

約数ペア:

[(1, 20938288), (2, 10469144), (4, 5234572), (7, 2991184), (8, 2617286), (14, 1495592), (16, 1308643), (17, 1231664), (28, 747796), (34, 615832), (49, 427312), (56, 373898), (68, 307916), (98, 213656), (112, 186949), (119, 175952), (136, 153958), (196, 106828), (238, 87976), (272, 76979), (392, 53414), (476, 43988), (784, 26707), (833, 25136), (952, 21994), (1571, 13328), (1666, 12568), (1904, 10997), (3142, 6664), (3332, 6284)]