19499425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 28873152

約数和(自身を除く): 9373727

約数列:

[1, 5, 11, 17, 25, 43, 55, 85, 97, 187, 215, 275, 425, 473, 485, 731, 935, 1067, 1075, 1649, 2365, 2425, 3655, 4171, 4675, 5335, 8041, 8245, 11825, 18139, 18275, 20855, 26675, 40205, 41225, 45881, 70907, 90695, 104275, 201025, 229405, 354535, 453475, 779977, 1147025, 1772675, 3899885, 19499425]

約数ペア:

[(1, 19499425), (5, 3899885), (11, 1772675), (17, 1147025), (25, 779977), (43, 453475), (55, 354535), (85, 229405), (97, 201025), (187, 104275), (215, 90695), (275, 70907), (425, 45881), (473, 41225), (485, 40205), (731, 26675), (935, 20855), (1067, 18275), (1075, 18139), (1649, 11825), (2365, 8245), (2425, 8041), (3655, 5335), (4171, 4675)]