19131904

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 80

約数和(自身を含む): 43211520

約数和(自身を除く): 24079616

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 64, 79, 86, 88, 128, 158, 172, 176, 256, 316, 344, 352, 473, 512, 632, 688, 704, 869, 946, 1264, 1376, 1408, 1738, 1892, 2528, 2752, 2816, 3397, 3476, 3784, 5056, 5504, 5632, 6794, 6952, 7568, 10112, 11008, 13588, 13904, 15136, 20224, 22016, 27176, 27808, 30272, 37367, 40448, 54352, 55616, 60544, 74734, 108704, 111232, 121088, 149468, 217408, 222464, 242176, 298936, 434816, 444928, 597872, 869632, 1195744, 1739264, 2391488, 4782976, 9565952, 19131904]

約数ペア:

[(1, 19131904), (2, 9565952), (4, 4782976), (8, 2391488), (11, 1739264), (16, 1195744), (22, 869632), (32, 597872), (43, 444928), (44, 434816), (64, 298936), (79, 242176), (86, 222464), (88, 217408), (128, 149468), (158, 121088), (172, 111232), (176, 108704), (256, 74734), (316, 60544), (344, 55616), (352, 54352), (473, 40448), (512, 37367), (632, 30272), (688, 27808), (704, 27176), (869, 22016), (946, 20224), (1264, 15136), (1376, 13904), (1408, 13588), (1738, 11008), (1892, 10112), (2528, 7568), (2752, 6952), (2816, 6794), (3397, 5632), (3476, 5504), (3784, 5056)]