19740655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 28055808

約数和(自身を除く): 8315153

約数列:

[1, 5, 11, 17, 43, 55, 85, 187, 215, 473, 491, 731, 935, 2365, 2455, 3655, 5401, 8041, 8347, 21113, 27005, 40205, 41735, 91817, 105565, 232243, 358921, 459085, 1161215, 1794605, 3948131, 19740655]

約数ペア:

[(1, 19740655), (5, 3948131), (11, 1794605), (17, 1161215), (43, 459085), (55, 358921), (85, 232243), (187, 105565), (215, 91817), (473, 41735), (491, 40205), (731, 27005), (935, 21113), (2365, 8347), (2455, 8041), (3655, 5401)]