20392450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 41325480

約数和(自身を除く): 20933030

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 137, 229, 274, 325, 458, 650, 685, 1145, 1370, 1781, 2290, 2977, 3425, 3562, 5725, 5954, 6850, 8905, 11450, 14885, 17810, 29770, 31373, 44525, 62746, 74425, 89050, 148850, 156865, 313730, 407849, 784325, 815698, 1568650, 2039245, 4078490, 10196225, 20392450]

約数ペア:

[(1, 20392450), (2, 10196225), (5, 4078490), (10, 2039245), (13, 1568650), (25, 815698), (26, 784325), (50, 407849), (65, 313730), (130, 156865), (137, 148850), (229, 89050), (274, 74425), (325, 62746), (458, 44525), (650, 31373), (685, 29770), (1145, 17810), (1370, 14885), (1781, 11450), (2290, 8905), (2977, 6850), (3425, 5954), (3562, 5725)]