19954340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6197}}^1$

素因数の和:6236

約数の個数: 48

約数和(自身を含む): 49980672

約数和(自身を除く): 30026332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6197, 12394, 24788, 30985, 43379, 61970, 86758, 123940, 142531, 173516, 216895, 285062, 433790, 570124, 712655, 867580, 997717, 1425310, 1995434, 2850620, 3990868, 4988585, 9977170, 19954340]

約数ペア:

[(1, 19954340), (2, 9977170), (4, 4988585), (5, 3990868), (7, 2850620), (10, 1995434), (14, 1425310), (20, 997717), (23, 867580), (28, 712655), (35, 570124), (46, 433790), (70, 285062), (92, 216895), (115, 173516), (140, 142531), (161, 123940), (230, 86758), (322, 61970), (460, 43379), (644, 30985), (805, 24788), (1610, 12394), (3220, 6197)]