261908816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{367}}^1$

素因数の和:508

約数の個数: 80

約数和(自身を含む): 567297024

約数和(自身を除く): 305388208

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 73, 94, 104, 146, 188, 208, 292, 367, 376, 584, 611, 734, 752, 949, 1168, 1222, 1468, 1898, 2444, 2936, 3431, 3796, 4771, 4888, 5872, 6862, 7592, 9542, 9776, 13724, 15184, 17249, 19084, 26791, 27448, 34498, 38168, 44603, 53582, 54896, 68996, 76336, 89206, 107164, 137992, 178412, 214328, 224237, 275984, 348283, 356824, 428656, 448474, 696566, 713648, 896948, 1259177, 1393132, 1793896, 2518354, 2786264, 3587792, 5036708, 5572528, 10073416, 16369301, 20146832, 32738602, 65477204, 130954408, 261908816]

約数ペア:

[(1, 261908816), (2, 130954408), (4, 65477204), (8, 32738602), (13, 20146832), (16, 16369301), (26, 10073416), (47, 5572528), (52, 5036708), (73, 3587792), (94, 2786264), (104, 2518354), (146, 1793896), (188, 1393132), (208, 1259177), (292, 896948), (367, 713648), (376, 696566), (584, 448474), (611, 428656), (734, 356824), (752, 348283), (949, 275984), (1168, 224237), (1222, 214328), (1468, 178412), (1898, 137992), (2444, 107164), (2936, 89206), (3431, 76336), (3796, 68996), (4771, 54896), (4888, 53582), (5872, 44603), (6862, 38168), (7592, 34498), (9542, 27448), (9776, 26791), (13724, 19084), (15184, 17249)]