19888780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 44089920

約数和(自身を除く): 24201140

約数列:

[1, 2, 4, 5, 10, 20, 29, 53, 58, 106, 116, 145, 212, 265, 290, 530, 580, 647, 1060, 1294, 1537, 2588, 3074, 3235, 6148, 6470, 7685, 12940, 15370, 18763, 30740, 34291, 37526, 68582, 75052, 93815, 137164, 171455, 187630, 342910, 375260, 685820, 994439, 1988878, 3977756, 4972195, 9944390, 19888780]

約数ペア:

[(1, 19888780), (2, 9944390), (4, 4972195), (5, 3977756), (10, 1988878), (20, 994439), (29, 685820), (53, 375260), (58, 342910), (106, 187630), (116, 171455), (145, 137164), (212, 93815), (265, 75052), (290, 68582), (530, 37526), (580, 34291), (647, 30740), (1060, 18763), (1294, 15370), (1537, 12940), (2588, 7685), (3074, 6470), (3235, 6148)]