19493120

素因数分解:

$2^8\times 5^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 47473944

約数和(自身を除く): 27980824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 157, 160, 194, 256, 314, 320, 388, 485, 628, 640, 776, 785, 970, 1256, 1280, 1552, 1570, 1940, 2512, 3104, 3140, 3880, 5024, 6208, 6280, 7760, 10048, 12416, 12560, 15229, 15520, 20096, 24832, 25120, 30458, 31040, 40192, 50240, 60916, 62080, 76145, 100480, 121832, 124160, 152290, 200960, 243664, 304580, 487328, 609160, 974656, 1218320, 1949312, 2436640, 3898624, 4873280, 9746560, 19493120]

約数ペア:

[(1, 19493120), (2, 9746560), (4, 4873280), (5, 3898624), (8, 2436640), (10, 1949312), (16, 1218320), (20, 974656), (32, 609160), (40, 487328), (64, 304580), (80, 243664), (97, 200960), (128, 152290), (157, 124160), (160, 121832), (194, 100480), (256, 76145), (314, 62080), (320, 60916), (388, 50240), (485, 40192), (628, 31040), (640, 30458), (776, 25120), (785, 24832), (970, 20096), (1256, 15520), (1280, 15229), (1552, 12560), (1570, 12416), (1940, 10048), (2512, 7760), (3104, 6280), (3140, 6208), (3880, 5024)]