18815636

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 20859244

約数列:

[1, 2, 4, 7, 14, 28, 31, 53, 62, 106, 124, 212, 217, 371, 409, 434, 742, 818, 868, 1484, 1636, 1643, 2863, 3286, 5726, 6572, 11452, 11501, 12679, 21677, 23002, 25358, 43354, 46004, 50716, 86708, 88753, 151739, 177506, 303478, 355012, 606956, 671987, 1343974, 2687948, 4703909, 9407818, 18815636]

約数ペア:

[(1, 18815636), (2, 9407818), (4, 4703909), (7, 2687948), (14, 1343974), (28, 671987), (31, 606956), (53, 355012), (62, 303478), (106, 177506), (124, 151739), (212, 88753), (217, 86708), (371, 50716), (409, 46004), (434, 43354), (742, 25358), (818, 23002), (868, 21677), (1484, 12679), (1636, 11501), (1643, 11452), (2863, 6572), (3286, 5726)]