19695137

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 26148864

約数和(自身を除く): 6453727

約数列:

[1, 7, 11, 31, 37, 77, 217, 223, 259, 341, 407, 1147, 1561, 2387, 2453, 2849, 6913, 8029, 8251, 12617, 17171, 48391, 57757, 76043, 88319, 90761, 255781, 532301, 635327, 1790467, 2813591, 19695137]

約数ペア:

[(1, 19695137), (7, 2813591), (11, 1790467), (31, 635327), (37, 532301), (77, 255781), (217, 90761), (223, 88319), (259, 76043), (341, 57757), (407, 48391), (1147, 17171), (1561, 12617), (2387, 8251), (2453, 8029), (2849, 6913)]