18347140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4519}}^1$

素因数の和:4564

約数の個数: 48

約数和(自身を含む): 45561600

約数和(自身を除く): 27214460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4519, 9038, 18076, 22595, 31633, 45190, 63266, 90380, 126532, 131051, 158165, 262102, 316330, 524204, 632660, 655255, 917357, 1310510, 1834714, 2621020, 3669428, 4586785, 9173570, 18347140]

約数ペア:

[(1, 18347140), (2, 9173570), (4, 4586785), (5, 3669428), (7, 2621020), (10, 1834714), (14, 1310510), (20, 917357), (28, 655255), (29, 632660), (35, 524204), (58, 316330), (70, 262102), (116, 158165), (140, 131051), (145, 126532), (203, 90380), (290, 63266), (406, 45190), (580, 31633), (812, 22595), (1015, 18076), (2030, 9038), (4060, 4519)]