21179864

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 19449736

約数列:

[1, 2, 4, 8, 89, 151, 178, 197, 302, 356, 394, 604, 712, 788, 1208, 1576, 13439, 17533, 26878, 29747, 35066, 53756, 59494, 70132, 107512, 118988, 140264, 237976, 2647483, 5294966, 10589932, 21179864]

約数ペア:

[(1, 21179864), (2, 10589932), (4, 5294966), (8, 2647483), (89, 237976), (151, 140264), (178, 118988), (197, 107512), (302, 70132), (356, 59494), (394, 53756), (604, 35066), (712, 29747), (788, 26878), (1208, 17533), (1576, 13439)]