19851625

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:202

約数の個数: 32

約数和(自身を含む): 26357760

約数和(自身を除く): 6506135

約数列:

[1, 5, 25, 31, 47, 109, 125, 155, 235, 545, 775, 1175, 1457, 2725, 3379, 3875, 5123, 5875, 7285, 13625, 16895, 25615, 36425, 84475, 128075, 158813, 182125, 422375, 640375, 794065, 3970325, 19851625]

約数ペア:

[(1, 19851625), (5, 3970325), (25, 794065), (31, 640375), (47, 422375), (109, 182125), (125, 158813), (155, 128075), (235, 84475), (545, 36425), (775, 25615), (1175, 16895), (1457, 13625), (2725, 7285), (3379, 5875), (3875, 5123)]