1888890890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1\times {\mathrm{383}}^1$

素因数の和:767

約数の個数: 64

約数和(自身を含む): 3637923840

約数和(自身を除く): 1749032950

約数列:

[1, 2, 5, 10, 19, 38, 95, 101, 190, 202, 257, 383, 505, 514, 766, 1010, 1285, 1915, 1919, 2570, 3830, 3838, 4883, 7277, 9595, 9766, 14554, 19190, 24415, 25957, 36385, 38683, 48830, 51914, 72770, 77366, 98431, 129785, 193415, 196862, 259570, 386830, 492155, 493183, 734977, 984310, 986366, 1469954, 1870189, 2465915, 3674885, 3740378, 4931830, 7349770, 9350945, 9941531, 18701890, 19883062, 49707655, 99415310, 188889089, 377778178, 944445445, 1888890890]

約数ペア:

[(1, 1888890890), (2, 944445445), (5, 377778178), (10, 188889089), (19, 99415310), (38, 49707655), (95, 19883062), (101, 18701890), (190, 9941531), (202, 9350945), (257, 7349770), (383, 4931830), (505, 3740378), (514, 3674885), (766, 2465915), (1010, 1870189), (1285, 1469954), (1915, 986366), (1919, 984310), (2570, 734977), (3830, 493183), (3838, 492155), (4883, 386830), (7277, 259570), (9595, 196862), (9766, 193415), (14554, 129785), (19190, 98431), (24415, 77366), (25957, 72770), (36385, 51914), (38683, 48830)]