21158995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 30227904

約数和(自身を除く): 9068909

約数列:

[1, 5, 11, 13, 55, 65, 101, 143, 293, 505, 715, 1111, 1313, 1465, 3223, 3809, 5555, 6565, 14443, 16115, 19045, 29593, 41899, 72215, 147965, 209495, 325523, 384709, 1627615, 1923545, 4231799, 21158995]

約数ペア:

[(1, 21158995), (5, 4231799), (11, 1923545), (13, 1627615), (55, 384709), (65, 325523), (101, 209495), (143, 147965), (293, 72215), (505, 41899), (715, 29593), (1111, 19045), (1313, 16115), (1465, 14443), (3223, 6565), (3809, 5555)]