201991850

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1427}}^1$

素因数の和:1607

約数の個数: 48

約数和(自身を含む): 398412000

約数和(自身を除く): 196420150

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 149, 190, 298, 475, 745, 950, 1427, 1490, 2831, 2854, 3725, 5662, 7135, 7450, 14155, 14270, 27113, 28310, 35675, 54226, 70775, 71350, 135565, 141550, 212623, 271130, 425246, 677825, 1063115, 1355650, 2126230, 4039837, 5315575, 8079674, 10631150, 20199185, 40398370, 100995925, 201991850]

約数ペア:

[(1, 201991850), (2, 100995925), (5, 40398370), (10, 20199185), (19, 10631150), (25, 8079674), (38, 5315575), (50, 4039837), (95, 2126230), (149, 1355650), (190, 1063115), (298, 677825), (475, 425246), (745, 271130), (950, 212623), (1427, 141550), (1490, 135565), (2831, 71350), (2854, 70775), (3725, 54226), (5662, 35675), (7135, 28310), (7450, 27113), (14155, 14270)]