18997797

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 32254848

約数和(自身を除く): 13257051

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 101, 159, 169, 273, 303, 371, 507, 689, 707, 1113, 1183, 1313, 2067, 2121, 3549, 3939, 4823, 5353, 8957, 9191, 14469, 16059, 17069, 26871, 27573, 37471, 51207, 62699, 69589, 112413, 119483, 188097, 208767, 358449, 487123, 904657, 1461369, 2713971, 6332599, 18997797]

約数ペア:

[(1, 18997797), (3, 6332599), (7, 2713971), (13, 1461369), (21, 904657), (39, 487123), (53, 358449), (91, 208767), (101, 188097), (159, 119483), (169, 112413), (273, 69589), (303, 62699), (371, 51207), (507, 37471), (689, 27573), (707, 26871), (1113, 17069), (1183, 16059), (1313, 14469), (2067, 9191), (2121, 8957), (3549, 5353), (3939, 4823)]