18161556

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{461}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 50139936

約数和(自身を除く): 31978380

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 67, 84, 98, 134, 147, 196, 201, 268, 294, 402, 461, 469, 588, 804, 922, 938, 1383, 1407, 1844, 1876, 2766, 2814, 3227, 3283, 5532, 5628, 6454, 6566, 9681, 9849, 12908, 13132, 19362, 19698, 22589, 30887, 38724, 39396, 45178, 61774, 67767, 90356, 92661, 123548, 135534, 185322, 216209, 271068, 370644, 432418, 648627, 864836, 1297254, 1513463, 2594508, 3026926, 4540389, 6053852, 9080778, 18161556]

約数ペア:

[(1, 18161556), (2, 9080778), (3, 6053852), (4, 4540389), (6, 3026926), (7, 2594508), (12, 1513463), (14, 1297254), (21, 864836), (28, 648627), (42, 432418), (49, 370644), (67, 271068), (84, 216209), (98, 185322), (134, 135534), (147, 123548), (196, 92661), (201, 90356), (268, 67767), (294, 61774), (402, 45178), (461, 39396), (469, 38724), (588, 30887), (804, 22589), (922, 19698), (938, 19362), (1383, 13132), (1407, 12908), (1844, 9849), (1876, 9681), (2766, 6566), (2814, 6454), (3227, 5628), (3283, 5532)]