201991248400

素因数分解:

$2^4\times 5^2\times {\mathrm{643}}^1\times {\mathrm{785347}}^1$

素因数の和:786008

約数の個数: 60

約数和(自身を含む): 486039311632

約数和(自身を除く): 284048063232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 643, 1286, 2572, 3215, 5144, 6430, 10288, 12860, 16075, 25720, 32150, 51440, 64300, 128600, 257200, 785347, 1570694, 3141388, 3926735, 6282776, 7853470, 12565552, 15706940, 19633675, 31413880, 39267350, 62827760, 78534700, 157069400, 314138800, 504978121, 1009956242, 2019912484, 2524890605, 4039824968, 5049781210, 8079649936, 10099562420, 12624453025, 20199124840, 25248906050, 40398249680, 50497812100, 100995624200, 201991248400]

約数ペア:

[(1, 201991248400), (2, 100995624200), (4, 50497812100), (5, 40398249680), (8, 25248906050), (10, 20199124840), (16, 12624453025), (20, 10099562420), (25, 8079649936), (40, 5049781210), (50, 4039824968), (80, 2524890605), (100, 2019912484), (200, 1009956242), (400, 504978121), (643, 314138800), (1286, 157069400), (2572, 78534700), (3215, 62827760), (5144, 39267350), (6430, 31413880), (10288, 19633675), (12860, 15706940), (16075, 12565552), (25720, 7853470), (32150, 6282776), (51440, 3926735), (64300, 3141388), (128600, 1570694), (257200, 785347)]