212561515

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 273661056

約数和(自身を除く): 61099541

約数列:

[1, 5, 23, 61, 115, 157, 193, 305, 785, 965, 1403, 3611, 4439, 7015, 9577, 11773, 18055, 22195, 30301, 47885, 58865, 151505, 220271, 270779, 696923, 1101355, 1353895, 1848361, 3484615, 9241805, 42512303, 212561515]

約数ペア:

[(1, 212561515), (5, 42512303), (23, 9241805), (61, 3484615), (115, 1848361), (157, 1353895), (193, 1101355), (305, 696923), (785, 270779), (965, 220271), (1403, 151505), (3611, 58865), (4439, 47885), (7015, 30301), (9577, 22195), (11773, 18055)]