21690368

素因数分解:

$2^{11}\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 53071200

約数和(自身を除く): 31380832

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 89, 112, 119, 128, 136, 178, 224, 238, 256, 272, 356, 448, 476, 512, 544, 623, 712, 896, 952, 1024, 1088, 1246, 1424, 1513, 1792, 1904, 2048, 2176, 2492, 2848, 3026, 3584, 3808, 4352, 4984, 5696, 6052, 7168, 7616, 8704, 9968, 10591, 11392, 12104, 14336, 15232, 17408, 19936, 21182, 22784, 24208, 30464, 34816, 39872, 42364, 45568, 48416, 60928, 79744, 84728, 91136, 96832, 121856, 159488, 169456, 182272, 193664, 243712, 318976, 338912, 387328, 637952, 677824, 774656, 1275904, 1355648, 1549312, 2711296, 3098624, 5422592, 10845184, 21690368]

約数ペア:

[(1, 21690368), (2, 10845184), (4, 5422592), (7, 3098624), (8, 2711296), (14, 1549312), (16, 1355648), (17, 1275904), (28, 774656), (32, 677824), (34, 637952), (56, 387328), (64, 338912), (68, 318976), (89, 243712), (112, 193664), (119, 182272), (128, 169456), (136, 159488), (178, 121856), (224, 96832), (238, 91136), (256, 84728), (272, 79744), (356, 60928), (448, 48416), (476, 45568), (512, 42364), (544, 39872), (623, 34816), (712, 30464), (896, 24208), (952, 22784), (1024, 21182), (1088, 19936), (1246, 17408), (1424, 15232), (1513, 14336), (1792, 12104), (1904, 11392), (2048, 10591), (2176, 9968), (2492, 8704), (2848, 7616), (3026, 7168), (3584, 6052), (3808, 5696), (4352, 4984)]