18851875

素因数分解:

$5^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:197

約数の個数: 40

約数和(自身を含む): 27991040

約数和(自身を除く): 9139165

約数列:

[1, 5, 7, 25, 31, 35, 125, 139, 155, 175, 217, 625, 695, 775, 875, 973, 1085, 3475, 3875, 4309, 4375, 4865, 5425, 17375, 19375, 21545, 24325, 27125, 30163, 86875, 107725, 121625, 135625, 150815, 538625, 608125, 754075, 2693125, 3770375, 18851875]

約数ペア:

[(1, 18851875), (5, 3770375), (7, 2693125), (25, 754075), (31, 608125), (35, 538625), (125, 150815), (139, 135625), (155, 121625), (175, 107725), (217, 86875), (625, 30163), (695, 27125), (775, 24325), (875, 21545), (973, 19375), (1085, 17375), (3475, 5425), (3875, 4865), (4309, 4375)]