21194368

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 46609920

約数和(自身を除く): 25415552

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 128, 188, 208, 271, 376, 416, 542, 611, 752, 832, 1084, 1222, 1504, 1664, 2168, 2444, 3008, 3523, 4336, 4888, 6016, 7046, 8672, 9776, 12737, 14092, 17344, 19552, 25474, 28184, 34688, 39104, 50948, 56368, 78208, 101896, 112736, 165581, 203792, 225472, 331162, 407584, 450944, 662324, 815168, 1324648, 1630336, 2649296, 5298592, 10597184, 21194368]

約数ペア:

[(1, 21194368), (2, 10597184), (4, 5298592), (8, 2649296), (13, 1630336), (16, 1324648), (26, 815168), (32, 662324), (47, 450944), (52, 407584), (64, 331162), (94, 225472), (104, 203792), (128, 165581), (188, 112736), (208, 101896), (271, 78208), (376, 56368), (416, 50948), (542, 39104), (611, 34688), (752, 28184), (832, 25474), (1084, 19552), (1222, 17344), (1504, 14092), (1664, 12737), (2168, 9776), (2444, 8672), (3008, 7046), (3523, 6016), (4336, 4888)]