18910450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 19837070

約数列:

[1, 2, 5, 10, 13, 25, 26, 47, 50, 65, 94, 130, 235, 325, 470, 611, 619, 650, 1175, 1222, 1238, 2350, 3055, 3095, 6110, 6190, 8047, 15275, 15475, 16094, 29093, 30550, 30950, 40235, 58186, 80470, 145465, 201175, 290930, 378209, 402350, 727325, 756418, 1454650, 1891045, 3782090, 9455225, 18910450]

約数ペア:

[(1, 18910450), (2, 9455225), (5, 3782090), (10, 1891045), (13, 1454650), (25, 756418), (26, 727325), (47, 402350), (50, 378209), (65, 290930), (94, 201175), (130, 145465), (235, 80470), (325, 58186), (470, 40235), (611, 30950), (619, 30550), (650, 29093), (1175, 16094), (1222, 15475), (1238, 15275), (2350, 8047), (3055, 6190), (3095, 6110)]