161708240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{557}}^1$

素因数の和:780

約数の個数: 80

約数和(自身を含む): 398545920

約数和(自身を除く): 236837680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 191, 304, 380, 382, 557, 760, 764, 955, 1114, 1520, 1528, 1910, 2228, 2785, 3056, 3629, 3820, 4456, 5570, 7258, 7640, 8912, 10583, 11140, 14516, 15280, 18145, 21166, 22280, 29032, 36290, 42332, 44560, 52915, 58064, 72580, 84664, 105830, 106387, 145160, 169328, 211660, 212774, 290320, 423320, 425548, 531935, 846640, 851096, 1063870, 1702192, 2021353, 2127740, 4042706, 4255480, 8085412, 8510960, 10106765, 16170824, 20213530, 32341648, 40427060, 80854120, 161708240]

約数ペア:

[(1, 161708240), (2, 80854120), (4, 40427060), (5, 32341648), (8, 20213530), (10, 16170824), (16, 10106765), (19, 8510960), (20, 8085412), (38, 4255480), (40, 4042706), (76, 2127740), (80, 2021353), (95, 1702192), (152, 1063870), (190, 851096), (191, 846640), (304, 531935), (380, 425548), (382, 423320), (557, 290320), (760, 212774), (764, 211660), (955, 169328), (1114, 145160), (1520, 106387), (1528, 105830), (1910, 84664), (2228, 72580), (2785, 58064), (3056, 52915), (3629, 44560), (3820, 42332), (4456, 36290), (5570, 29032), (7258, 22280), (7640, 21166), (8912, 18145), (10583, 15280), (11140, 14516)]