19805120

素因数分解:

$2^6\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1049}}^1$

素因数の和:1125

約数の個数: 56

約数和(自身を含む): 48006000

約数和(自身を除く): 28200880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 160, 236, 295, 320, 472, 590, 944, 1049, 1180, 1888, 2098, 2360, 3776, 4196, 4720, 5245, 8392, 9440, 10490, 16784, 18880, 20980, 33568, 41960, 61891, 67136, 83920, 123782, 167840, 247564, 309455, 335680, 495128, 618910, 990256, 1237820, 1980512, 2475640, 3961024, 4951280, 9902560, 19805120]

約数ペア:

[(1, 19805120), (2, 9902560), (4, 4951280), (5, 3961024), (8, 2475640), (10, 1980512), (16, 1237820), (20, 990256), (32, 618910), (40, 495128), (59, 335680), (64, 309455), (80, 247564), (118, 167840), (160, 123782), (236, 83920), (295, 67136), (320, 61891), (472, 41960), (590, 33568), (944, 20980), (1049, 18880), (1180, 16784), (1888, 10490), (2098, 9440), (2360, 8392), (3776, 5245), (4196, 4720)]