21700870

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:792

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 18928730

約数列:

[1, 2, 5, 10, 37, 74, 89, 178, 185, 370, 445, 659, 890, 1318, 3293, 3295, 6586, 6590, 16465, 24383, 32930, 48766, 58651, 117302, 121915, 243830, 293255, 586510, 2170087, 4340174, 10850435, 21700870]

約数ペア:

[(1, 21700870), (2, 10850435), (5, 4340174), (10, 2170087), (37, 586510), (74, 293255), (89, 243830), (178, 121915), (185, 117302), (370, 58651), (445, 48766), (659, 32930), (890, 24383), (1318, 16465), (3293, 6590), (3295, 6586)]