18206685

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 38413440

約数和(自身を除く): 20206755

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 49, 63, 69, 105, 115, 147, 161, 207, 245, 315, 345, 359, 441, 483, 735, 805, 1035, 1077, 1127, 1449, 1795, 2205, 2415, 2513, 3231, 3381, 5385, 5635, 7245, 7539, 8257, 10143, 12565, 16155, 16905, 17591, 22617, 24771, 37695, 41285, 50715, 52773, 57799, 74313, 87955, 113085, 123855, 158319, 173397, 263865, 288995, 371565, 404593, 520191, 791595, 866985, 1213779, 2022965, 2600955, 3641337, 6068895, 18206685]

約数ペア:

[(1, 18206685), (3, 6068895), (5, 3641337), (7, 2600955), (9, 2022965), (15, 1213779), (21, 866985), (23, 791595), (35, 520191), (45, 404593), (49, 371565), (63, 288995), (69, 263865), (105, 173397), (115, 158319), (147, 123855), (161, 113085), (207, 87955), (245, 74313), (315, 57799), (345, 52773), (359, 50715), (441, 41285), (483, 37695), (735, 24771), (805, 22617), (1035, 17591), (1077, 16905), (1127, 16155), (1449, 12565), (1795, 10143), (2205, 8257), (2415, 7539), (2513, 7245), (3231, 5635), (3381, 5385)]