20485085696

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1290643}}^1$

素因数の和:1290692

約数の個数: 40

約数和(自身を含む): 42250521984

約数和(自身を除く): 21765436288

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1984, 3968, 7936, 15872, 1290643, 2581286, 5162572, 10325144, 20650288, 40009933, 41300576, 80019866, 82601152, 160039732, 165202304, 320079464, 330404608, 640158928, 660809216, 1280317856, 2560635712, 5121271424, 10242542848, 20485085696]

約数ペア:

[(1, 20485085696), (2, 10242542848), (4, 5121271424), (8, 2560635712), (16, 1280317856), (31, 660809216), (32, 640158928), (62, 330404608), (64, 320079464), (124, 165202304), (128, 160039732), (248, 82601152), (256, 80019866), (496, 41300576), (512, 40009933), (992, 20650288), (1984, 10325144), (3968, 5162572), (7936, 2581286), (15872, 1290643)]