21668830

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 18338690

約数列:

[1, 2, 5, 10, 89, 97, 178, 194, 251, 445, 485, 502, 890, 970, 1255, 2510, 8633, 17266, 22339, 24347, 43165, 44678, 48694, 86330, 111695, 121735, 223390, 243470, 2166883, 4333766, 10834415, 21668830]

約数ペア:

[(1, 21668830), (2, 10834415), (5, 4333766), (10, 2166883), (89, 243470), (97, 223390), (178, 121735), (194, 111695), (251, 86330), (445, 48694), (485, 44678), (502, 43165), (890, 24347), (970, 22339), (1255, 17266), (2510, 8633)]