21190712890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{525433}}^1$

素因数の和:525586

約数の個数: 32

約数和(自身を含む): 39533654160

約数和(自身を除く): 18342941270

約数列:

[1, 2, 5, 10, 37, 74, 109, 185, 218, 370, 545, 1090, 4033, 8066, 20165, 40330, 525433, 1050866, 2627165, 5254330, 19441021, 38882042, 57272197, 97205105, 114544394, 194410210, 286360985, 572721970, 2119071289, 4238142578, 10595356445, 21190712890]

約数ペア:

[(1, 21190712890), (2, 10595356445), (5, 4238142578), (10, 2119071289), (37, 572721970), (74, 286360985), (109, 194410210), (185, 114544394), (218, 97205105), (370, 57272197), (545, 38882042), (1090, 19441021), (4033, 5254330), (8066, 2627165), (20165, 1050866), (40330, 525433)]