18301780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4217}}^1$

素因数の和:4264

約数の個数: 48

約数和(自身を含む): 45351936

約数和(自身を除く): 27050156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4217, 4340, 8434, 16868, 21085, 29519, 42170, 59038, 84340, 118076, 130727, 147595, 261454, 295190, 522908, 590380, 653635, 915089, 1307270, 1830178, 2614540, 3660356, 4575445, 9150890, 18301780]

約数ペア:

[(1, 18301780), (2, 9150890), (4, 4575445), (5, 3660356), (7, 2614540), (10, 1830178), (14, 1307270), (20, 915089), (28, 653635), (31, 590380), (35, 522908), (62, 295190), (70, 261454), (124, 147595), (140, 130727), (155, 118076), (217, 84340), (310, 59038), (434, 42170), (620, 29519), (868, 21085), (1085, 16868), (2170, 8434), (4217, 4340)]