21539170

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 42771240

約数和(自身を除く): 21232070

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 170, 257, 289, 290, 493, 514, 578, 986, 1285, 1445, 2465, 2570, 2890, 4369, 4930, 7453, 8381, 8738, 14906, 16762, 21845, 37265, 41905, 43690, 74273, 74530, 83810, 126701, 148546, 253402, 371365, 633505, 742730, 1267010, 2153917, 4307834, 10769585, 21539170]

約数ペア:

[(1, 21539170), (2, 10769585), (5, 4307834), (10, 2153917), (17, 1267010), (29, 742730), (34, 633505), (58, 371365), (85, 253402), (145, 148546), (170, 126701), (257, 83810), (289, 74530), (290, 74273), (493, 43690), (514, 41905), (578, 37265), (986, 21845), (1285, 16762), (1445, 14906), (2465, 8738), (2570, 8381), (2890, 7453), (4369, 4930)]