21549465

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{337}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 45082440

約数和(自身を除く): 23532975

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 49, 63, 87, 105, 145, 147, 203, 245, 261, 315, 337, 435, 441, 609, 735, 1011, 1015, 1305, 1421, 1685, 1827, 2205, 2359, 3033, 3045, 4263, 5055, 7077, 7105, 9135, 9773, 11795, 12789, 15165, 16513, 21231, 21315, 29319, 35385, 48865, 49539, 63945, 68411, 82565, 87957, 106155, 146595, 148617, 205233, 247695, 342055, 439785, 478877, 615699, 743085, 1026165, 1436631, 2394385, 3078495, 4309893, 7183155, 21549465]

約数ペア:

[(1, 21549465), (3, 7183155), (5, 4309893), (7, 3078495), (9, 2394385), (15, 1436631), (21, 1026165), (29, 743085), (35, 615699), (45, 478877), (49, 439785), (63, 342055), (87, 247695), (105, 205233), (145, 148617), (147, 146595), (203, 106155), (245, 87957), (261, 82565), (315, 68411), (337, 63945), (435, 49539), (441, 48865), (609, 35385), (735, 29319), (1011, 21315), (1015, 21231), (1305, 16513), (1421, 15165), (1685, 12789), (1827, 11795), (2205, 9773), (2359, 9135), (3033, 7105), (3045, 7077), (4263, 5055)]