21505568

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 96

約数和(自身を含む): 52899840

約数和(自身を除く): 31394272

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 31, 32, 38, 56, 62, 76, 112, 124, 133, 152, 163, 217, 224, 248, 266, 304, 326, 434, 496, 532, 589, 608, 652, 868, 992, 1064, 1141, 1178, 1304, 1736, 2128, 2282, 2356, 2608, 3097, 3472, 4123, 4256, 4564, 4712, 5053, 5216, 6194, 6944, 8246, 9128, 9424, 10106, 12388, 16492, 18256, 18848, 20212, 21679, 24776, 32984, 35371, 36512, 40424, 43358, 49552, 65968, 70742, 80848, 86716, 96007, 99104, 131936, 141484, 161696, 173432, 192014, 282968, 346864, 384028, 565936, 672049, 693728, 768056, 1131872, 1344098, 1536112, 2688196, 3072224, 5376392, 10752784, 21505568]

約数ペア:

[(1, 21505568), (2, 10752784), (4, 5376392), (7, 3072224), (8, 2688196), (14, 1536112), (16, 1344098), (19, 1131872), (28, 768056), (31, 693728), (32, 672049), (38, 565936), (56, 384028), (62, 346864), (76, 282968), (112, 192014), (124, 173432), (133, 161696), (152, 141484), (163, 131936), (217, 99104), (224, 96007), (248, 86716), (266, 80848), (304, 70742), (326, 65968), (434, 49552), (496, 43358), (532, 40424), (589, 36512), (608, 35371), (652, 32984), (868, 24776), (992, 21679), (1064, 20212), (1141, 18848), (1178, 18256), (1304, 16492), (1736, 12388), (2128, 10106), (2282, 9424), (2356, 9128), (2608, 8246), (3097, 6944), (3472, 6194), (4123, 5216), (4256, 5053), (4564, 4712)]