18604820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{439}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 42430080

約数和(自身を除く): 23825260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 439, 652, 815, 878, 1630, 1756, 2119, 2195, 3260, 4238, 4390, 5707, 8476, 8780, 10595, 11414, 21190, 22828, 28535, 42380, 57070, 71557, 114140, 143114, 286228, 357785, 715570, 930241, 1431140, 1860482, 3720964, 4651205, 9302410, 18604820]

約数ペア:

[(1, 18604820), (2, 9302410), (4, 4651205), (5, 3720964), (10, 1860482), (13, 1431140), (20, 930241), (26, 715570), (52, 357785), (65, 286228), (130, 143114), (163, 114140), (260, 71557), (326, 57070), (439, 42380), (652, 28535), (815, 22828), (878, 21190), (1630, 11414), (1756, 10595), (2119, 8780), (2195, 8476), (3260, 5707), (4238, 4390)]