21013877665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{186649}}^1$

素因数の和:186777

約数の個数: 32

約数和(自身を含む): 29027808000

約数和(自身を除く): 8013930335

約数列:

[1, 5, 11, 23, 55, 89, 115, 253, 445, 979, 1265, 2047, 4895, 10235, 22517, 112585, 186649, 933245, 2053139, 4292927, 10265695, 16611761, 21464635, 47222197, 83058805, 182729371, 236110985, 382070503, 913646855, 1910352515, 4202775533, 21013877665]

約数ペア:

[(1, 21013877665), (5, 4202775533), (11, 1910352515), (23, 913646855), (55, 382070503), (89, 236110985), (115, 182729371), (253, 83058805), (445, 47222197), (979, 21464635), (1265, 16611761), (2047, 10265695), (4895, 4292927), (10235, 2053139), (22517, 933245), (112585, 186649)]