21755936

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:313

約数の個数: 48

約数和(自身を含む): 44551584

約数和(自身を除く): 22795648

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 97, 163, 172, 194, 326, 344, 388, 652, 688, 776, 1304, 1376, 1552, 2608, 3104, 4171, 5216, 7009, 8342, 14018, 15811, 16684, 28036, 31622, 33368, 56072, 63244, 66736, 112144, 126488, 133472, 224288, 252976, 505952, 679873, 1359746, 2719492, 5438984, 10877968, 21755936]

約数ペア:

[(1, 21755936), (2, 10877968), (4, 5438984), (8, 2719492), (16, 1359746), (32, 679873), (43, 505952), (86, 252976), (97, 224288), (163, 133472), (172, 126488), (194, 112144), (326, 66736), (344, 63244), (388, 56072), (652, 33368), (688, 31622), (776, 28036), (1304, 16684), (1376, 15811), (1552, 14018), (2608, 8342), (3104, 7009), (4171, 5216)]