1809225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:87

約数の個数: 72

約数和(自身を含む): 3830112

約数和(自身を除く): 2020887

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 43, 45, 51, 55, 75, 85, 99, 129, 153, 165, 187, 215, 225, 255, 275, 387, 425, 473, 495, 561, 645, 731, 765, 825, 935, 1075, 1275, 1419, 1683, 1935, 2193, 2365, 2475, 2805, 3225, 3655, 3825, 4257, 4675, 6579, 7095, 8041, 8415, 9675, 10965, 11825, 14025, 18275, 21285, 24123, 32895, 35475, 40205, 42075, 54825, 72369, 106425, 120615, 164475, 201025, 361845, 603075, 1809225]

約数ペア:

[(1, 1809225), (3, 603075), (5, 361845), (9, 201025), (11, 164475), (15, 120615), (17, 106425), (25, 72369), (33, 54825), (43, 42075), (45, 40205), (51, 35475), (55, 32895), (75, 24123), (85, 21285), (99, 18275), (129, 14025), (153, 11825), (165, 10965), (187, 9675), (215, 8415), (225, 8041), (255, 7095), (275, 6579), (387, 4675), (425, 4257), (473, 3825), (495, 3655), (561, 3225), (645, 2805), (731, 2475), (765, 2365), (825, 2193), (935, 1935), (1075, 1683), (1275, 1419)]