9990855

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 21127392

約数和(自身を除く): 11136537

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 49, 63, 69, 105, 115, 147, 161, 197, 207, 245, 315, 345, 441, 483, 591, 735, 805, 985, 1035, 1127, 1379, 1449, 1773, 2205, 2415, 2955, 3381, 4137, 4531, 5635, 6895, 7245, 8865, 9653, 10143, 12411, 13593, 16905, 20685, 22655, 28959, 31717, 40779, 48265, 50715, 62055, 67965, 86877, 95151, 144795, 158585, 203895, 222019, 285453, 434385, 475755, 666057, 1110095, 1427265, 1998171, 3330285, 9990855]

約数ペア:

[(1, 9990855), (3, 3330285), (5, 1998171), (7, 1427265), (9, 1110095), (15, 666057), (21, 475755), (23, 434385), (35, 285453), (45, 222019), (49, 203895), (63, 158585), (69, 144795), (105, 95151), (115, 86877), (147, 67965), (161, 62055), (197, 50715), (207, 48265), (245, 40779), (315, 31717), (345, 28959), (441, 22655), (483, 20685), (591, 16905), (735, 13593), (805, 12411), (985, 10143), (1035, 9653), (1127, 8865), (1379, 7245), (1449, 6895), (1773, 5635), (2205, 4531), (2415, 4137), (2955, 3381)]