19690240

素因数分解:

$2^8\times 5^1\times {\mathrm{15383}}^1$

素因数の和:15404

約数の個数: 36

約数和(自身を含む): 47167344

約数和(自身を除く): 27477104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15383, 30766, 61532, 76915, 123064, 153830, 246128, 307660, 492256, 615320, 984512, 1230640, 1969024, 2461280, 3938048, 4922560, 9845120, 19690240]

約数ペア:

[(1, 19690240), (2, 9845120), (4, 4922560), (5, 3938048), (8, 2461280), (10, 1969024), (16, 1230640), (20, 984512), (32, 615320), (40, 492256), (64, 307660), (80, 246128), (128, 153830), (160, 123064), (256, 76915), (320, 61532), (640, 30766), (1280, 15383)]