21163436

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{257}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 45251136

約数和(自身を除く): 24087700

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 173, 238, 257, 346, 476, 514, 692, 1028, 1211, 1799, 2422, 2941, 3598, 4369, 4844, 5882, 7196, 8738, 11764, 17476, 20587, 30583, 41174, 44461, 61166, 82348, 88922, 122332, 177844, 311227, 622454, 755837, 1244908, 1511674, 3023348, 5290859, 10581718, 21163436]

約数ペア:

[(1, 21163436), (2, 10581718), (4, 5290859), (7, 3023348), (14, 1511674), (17, 1244908), (28, 755837), (34, 622454), (68, 311227), (119, 177844), (173, 122332), (238, 88922), (257, 82348), (346, 61166), (476, 44461), (514, 41174), (692, 30583), (1028, 20587), (1211, 17476), (1799, 11764), (2422, 8738), (2941, 7196), (3598, 5882), (4369, 4844)]