20475730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 22706990

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 97, 101, 110, 190, 194, 202, 209, 418, 485, 505, 970, 1010, 1045, 1067, 1111, 1843, 1919, 2090, 2134, 2222, 3686, 3838, 5335, 5555, 9215, 9595, 9797, 10670, 11110, 18430, 19190, 19594, 20273, 21109, 40546, 42218, 48985, 97970, 101365, 105545, 107767, 186143, 202730, 211090, 215534, 372286, 538835, 930715, 1077670, 1861430, 2047573, 4095146, 10237865, 20475730]

約数ペア:

[(1, 20475730), (2, 10237865), (5, 4095146), (10, 2047573), (11, 1861430), (19, 1077670), (22, 930715), (38, 538835), (55, 372286), (95, 215534), (97, 211090), (101, 202730), (110, 186143), (190, 107767), (194, 105545), (202, 101365), (209, 97970), (418, 48985), (485, 42218), (505, 40546), (970, 21109), (1010, 20273), (1045, 19594), (1067, 19190), (1111, 18430), (1843, 11110), (1919, 10670), (2090, 9797), (2134, 9595), (2222, 9215), (3686, 5555), (3838, 5335)]