21426156975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{275489}}^1$

素因数の和:275580

約数の個数: 48

約数和(自身を含む): 38123408160

約数和(自身を除く): 16697251185

約数列:

[1, 3, 5, 15, 17, 25, 51, 61, 75, 85, 183, 255, 305, 425, 915, 1037, 1275, 1525, 3111, 4575, 5185, 15555, 25925, 77775, 275489, 826467, 1377445, 4132335, 4683313, 6887225, 14049939, 16804829, 20661675, 23416565, 50414487, 70249695, 84024145, 117082825, 252072435, 285682093, 351248475, 420120725, 857046279, 1260362175, 1428410465, 4285231395, 7142052325, 21426156975]

約数ペア:

[(1, 21426156975), (3, 7142052325), (5, 4285231395), (15, 1428410465), (17, 1260362175), (25, 857046279), (51, 420120725), (61, 351248475), (75, 285682093), (85, 252072435), (183, 117082825), (255, 84024145), (305, 70249695), (425, 50414487), (915, 23416565), (1037, 20661675), (1275, 16804829), (1525, 14049939), (3111, 6887225), (4575, 4683313), (5185, 4132335), (15555, 1377445), (25925, 826467), (77775, 275489)]