20509100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 47892768

約数和(自身を除く): 27383668

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 37, 46, 50, 74, 92, 100, 115, 148, 185, 230, 241, 370, 460, 482, 575, 740, 851, 925, 964, 1150, 1205, 1702, 1850, 2300, 2410, 3404, 3700, 4255, 4820, 5543, 6025, 8510, 8917, 11086, 12050, 17020, 17834, 21275, 22172, 24100, 27715, 35668, 42550, 44585, 55430, 85100, 89170, 110860, 138575, 178340, 205091, 222925, 277150, 410182, 445850, 554300, 820364, 891700, 1025455, 2050910, 4101820, 5127275, 10254550, 20509100]

約数ペア:

[(1, 20509100), (2, 10254550), (4, 5127275), (5, 4101820), (10, 2050910), (20, 1025455), (23, 891700), (25, 820364), (37, 554300), (46, 445850), (50, 410182), (74, 277150), (92, 222925), (100, 205091), (115, 178340), (148, 138575), (185, 110860), (230, 89170), (241, 85100), (370, 55430), (460, 44585), (482, 42550), (575, 35668), (740, 27715), (851, 24100), (925, 22172), (964, 21275), (1150, 17834), (1205, 17020), (1702, 12050), (1850, 11086), (2300, 8917), (2410, 8510), (3404, 6025), (3700, 5543), (4255, 4820)]