21453964

素因数分解:

$2^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:867

約数の個数: 48

約数和(自身を含む): 46144000

約数和(自身を除く): 24690036

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 343, 532, 686, 823, 931, 1372, 1646, 1862, 3292, 3724, 5761, 6517, 11522, 13034, 15637, 23044, 26068, 31274, 40327, 62548, 80654, 109459, 161308, 218918, 282289, 437836, 564578, 766213, 1129156, 1532426, 3064852, 5363491, 10726982, 21453964]

約数ペア:

[(1, 21453964), (2, 10726982), (4, 5363491), (7, 3064852), (14, 1532426), (19, 1129156), (28, 766213), (38, 564578), (49, 437836), (76, 282289), (98, 218918), (133, 161308), (196, 109459), (266, 80654), (343, 62548), (532, 40327), (686, 31274), (823, 26068), (931, 23044), (1372, 15637), (1646, 13034), (1862, 11522), (3292, 6517), (3724, 5761)]