19898240

素因数分解:

$2^7\times 5^1\times {\mathrm{31091}}^1$

素因数の和:31110

約数の個数: 32

約数和(自身を含む): 47570760

約数和(自身を除く): 27672520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31091, 62182, 124364, 155455, 248728, 310910, 497456, 621820, 994912, 1243640, 1989824, 2487280, 3979648, 4974560, 9949120, 19898240]

約数ペア:

[(1, 19898240), (2, 9949120), (4, 4974560), (5, 3979648), (8, 2487280), (10, 1989824), (16, 1243640), (20, 994912), (32, 621820), (40, 497456), (64, 310910), (80, 248728), (128, 155455), (160, 124364), (320, 62182), (640, 31091)]