20409970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1855

約数の個数: 48

約数和(自身を含む): 44618688

約数和(自身を除く): 24208718

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 490, 805, 1127, 1610, 1811, 2254, 3622, 5635, 9055, 11270, 12677, 18110, 25354, 41653, 63385, 83306, 88739, 126770, 177478, 208265, 291571, 416530, 443695, 583142, 887390, 1457855, 2040997, 2915710, 4081994, 10204985, 20409970]

約数ペア:

[(1, 20409970), (2, 10204985), (5, 4081994), (7, 2915710), (10, 2040997), (14, 1457855), (23, 887390), (35, 583142), (46, 443695), (49, 416530), (70, 291571), (98, 208265), (115, 177478), (161, 126770), (230, 88739), (245, 83306), (322, 63385), (490, 41653), (805, 25354), (1127, 18110), (1610, 12677), (1811, 11270), (2254, 9055), (3622, 5635)]