81400970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{40099}}^1$

素因数の和:40142

約数の個数: 32

約数和(自身を含む): 173232000

約数和(自身を除く): 91831030

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 40099, 80198, 200495, 280693, 400990, 561386, 1162871, 1403465, 2325742, 2806930, 5814355, 8140097, 11628710, 16280194, 40700485, 81400970]

約数ペア:

[(1, 81400970), (2, 40700485), (5, 16280194), (7, 11628710), (10, 8140097), (14, 5814355), (29, 2806930), (35, 2325742), (58, 1403465), (70, 1162871), (145, 561386), (203, 400990), (290, 280693), (406, 200495), (1015, 80198), (2030, 40099)]