18738993

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{827}}^1$

素因数の和:933

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 12420303

約数列:

[1, 3, 7, 13, 21, 39, 83, 91, 249, 273, 581, 827, 1079, 1743, 2481, 3237, 5789, 7553, 10751, 17367, 22659, 32253, 68641, 75257, 205923, 225771, 480487, 892333, 1441461, 2676999, 6246331, 18738993]

約数ペア:

[(1, 18738993), (3, 6246331), (7, 2676999), (13, 1441461), (21, 892333), (39, 480487), (83, 225771), (91, 205923), (249, 75257), (273, 68641), (581, 32253), (827, 22659), (1079, 17367), (1743, 10751), (2481, 7553), (3237, 5789)]