21157070

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23632690

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 53, 55, 95, 106, 110, 190, 191, 209, 265, 382, 418, 530, 583, 955, 1007, 1045, 1166, 1910, 2014, 2090, 2101, 2915, 3629, 4202, 5035, 5830, 7258, 10070, 10123, 10505, 11077, 18145, 20246, 21010, 22154, 36290, 39919, 50615, 55385, 79838, 101230, 110770, 111353, 192337, 199595, 222706, 384674, 399190, 556765, 961685, 1113530, 1923370, 2115707, 4231414, 10578535, 21157070]

約数ペア:

[(1, 21157070), (2, 10578535), (5, 4231414), (10, 2115707), (11, 1923370), (19, 1113530), (22, 961685), (38, 556765), (53, 399190), (55, 384674), (95, 222706), (106, 199595), (110, 192337), (190, 111353), (191, 110770), (209, 101230), (265, 79838), (382, 55385), (418, 50615), (530, 39919), (583, 36290), (955, 22154), (1007, 21010), (1045, 20246), (1166, 18145), (1910, 11077), (2014, 10505), (2090, 10123), (2101, 10070), (2915, 7258), (3629, 5830), (4202, 5035)]