18993875

素因数分解:

$5^3\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:176

約数の個数: 32

約数和(自身を含む): 25069824

約数和(自身を除く): 6075949

約数列:

[1, 5, 25, 47, 53, 61, 125, 235, 265, 305, 1175, 1325, 1525, 2491, 2867, 3233, 5875, 6625, 7625, 12455, 14335, 16165, 62275, 71675, 80825, 151951, 311375, 358375, 404125, 759755, 3798775, 18993875]

約数ペア:

[(1, 18993875), (5, 3798775), (25, 759755), (47, 404125), (53, 358375), (61, 311375), (125, 151951), (235, 80825), (265, 71675), (305, 62275), (1175, 16165), (1325, 14335), (1525, 12455), (2491, 7625), (2867, 6625), (3233, 5875)]