51215320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{98491}}^1$

素因数の和:98515

約数の個数: 32

約数和(自身を含む): 124099920

約数和(自身を除く): 72884600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 98491, 196982, 393964, 492455, 787928, 984910, 1280383, 1969820, 2560766, 3939640, 5121532, 6401915, 10243064, 12803830, 25607660, 51215320]

約数ペア:

[(1, 51215320), (2, 25607660), (4, 12803830), (5, 10243064), (8, 6401915), (10, 5121532), (13, 3939640), (20, 2560766), (26, 1969820), (40, 1280383), (52, 984910), (65, 787928), (104, 492455), (130, 393964), (260, 196982), (520, 98491)]