18995766

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 42425856

約数和(自身を除く): 23430090

約数列:

[1, 2, 3, 6, 17, 34, 43, 51, 61, 71, 86, 102, 122, 129, 142, 183, 213, 258, 366, 426, 731, 1037, 1207, 1462, 2074, 2193, 2414, 2623, 3053, 3111, 3621, 4331, 4386, 5246, 6106, 6222, 7242, 7869, 8662, 9159, 12993, 15738, 18318, 25986, 44591, 51901, 73627, 89182, 103802, 133773, 147254, 155703, 186233, 220881, 267546, 311406, 372466, 441762, 558699, 1117398, 3165961, 6331922, 9497883, 18995766]

約数ペア:

[(1, 18995766), (2, 9497883), (3, 6331922), (6, 3165961), (17, 1117398), (34, 558699), (43, 441762), (51, 372466), (61, 311406), (71, 267546), (86, 220881), (102, 186233), (122, 155703), (129, 147254), (142, 133773), (183, 103802), (213, 89182), (258, 73627), (366, 51901), (426, 44591), (731, 25986), (1037, 18318), (1207, 15738), (1462, 12993), (2074, 9159), (2193, 8662), (2414, 7869), (2623, 7242), (3053, 6222), (3111, 6106), (3621, 5246), (4331, 4386)]