81112900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3881}}^1$

素因数の和:3925

約数の個数: 72

約数和(自身を含む): 202174560

約数和(自身を除く): 121061660

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 950, 1045, 1100, 1900, 2090, 3881, 4180, 5225, 7762, 10450, 15524, 19405, 20900, 38810, 42691, 73739, 77620, 85382, 97025, 147478, 170764, 194050, 213455, 294956, 368695, 388100, 426910, 737390, 811129, 853820, 1067275, 1474780, 1622258, 1843475, 2134550, 3244516, 3686950, 4055645, 4269100, 7373900, 8111290, 16222580, 20278225, 40556450, 81112900]

約数ペア:

[(1, 81112900), (2, 40556450), (4, 20278225), (5, 16222580), (10, 8111290), (11, 7373900), (19, 4269100), (20, 4055645), (22, 3686950), (25, 3244516), (38, 2134550), (44, 1843475), (50, 1622258), (55, 1474780), (76, 1067275), (95, 853820), (100, 811129), (110, 737390), (190, 426910), (209, 388100), (220, 368695), (275, 294956), (380, 213455), (418, 194050), (475, 170764), (550, 147478), (836, 97025), (950, 85382), (1045, 77620), (1100, 73739), (1900, 42691), (2090, 38810), (3881, 20900), (4180, 19405), (5225, 15524), (7762, 10450)]