21506784

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{907}}^1$

素因数の和:952

約数の個数: 96

約数和(自身を含む): 64068480

約数和(自身を除く): 42561696

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 32, 38, 39, 48, 52, 57, 76, 78, 96, 104, 114, 152, 156, 208, 228, 247, 304, 312, 416, 456, 494, 608, 624, 741, 907, 912, 988, 1248, 1482, 1814, 1824, 1976, 2721, 2964, 3628, 3952, 5442, 5928, 7256, 7904, 10884, 11791, 11856, 14512, 17233, 21768, 23582, 23712, 29024, 34466, 35373, 43536, 47164, 51699, 68932, 70746, 87072, 94328, 103398, 137864, 141492, 188656, 206796, 224029, 275728, 282984, 377312, 413592, 448058, 551456, 565968, 672087, 827184, 896116, 1131936, 1344174, 1654368, 1792232, 2688348, 3584464, 5376696, 7168928, 10753392, 21506784]

約数ペア:

[(1, 21506784), (2, 10753392), (3, 7168928), (4, 5376696), (6, 3584464), (8, 2688348), (12, 1792232), (13, 1654368), (16, 1344174), (19, 1131936), (24, 896116), (26, 827184), (32, 672087), (38, 565968), (39, 551456), (48, 448058), (52, 413592), (57, 377312), (76, 282984), (78, 275728), (96, 224029), (104, 206796), (114, 188656), (152, 141492), (156, 137864), (208, 103398), (228, 94328), (247, 87072), (304, 70746), (312, 68932), (416, 51699), (456, 47164), (494, 43536), (608, 35373), (624, 34466), (741, 29024), (907, 23712), (912, 23582), (988, 21768), (1248, 17233), (1482, 14512), (1814, 11856), (1824, 11791), (1976, 10884), (2721, 7904), (2964, 7256), (3628, 5928), (3952, 5442)]