25290520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 60652800

約数和(自身を除く): 35362280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 311, 380, 428, 535, 622, 760, 856, 1070, 1244, 1555, 2033, 2140, 2488, 3110, 4066, 4280, 5909, 6220, 8132, 10165, 11818, 12440, 16264, 20330, 23636, 29545, 33277, 40660, 47272, 59090, 66554, 81320, 118180, 133108, 166385, 236360, 266216, 332770, 632263, 665540, 1264526, 1331080, 2529052, 3161315, 5058104, 6322630, 12645260, 25290520]

約数ペア:

[(1, 25290520), (2, 12645260), (4, 6322630), (5, 5058104), (8, 3161315), (10, 2529052), (19, 1331080), (20, 1264526), (38, 665540), (40, 632263), (76, 332770), (95, 266216), (107, 236360), (152, 166385), (190, 133108), (214, 118180), (311, 81320), (380, 66554), (428, 59090), (535, 47272), (622, 40660), (760, 33277), (856, 29545), (1070, 23636), (1244, 20330), (1555, 16264), (2033, 12440), (2140, 11818), (2488, 10165), (3110, 8132), (4066, 6220), (4280, 5909)]