21000779008

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{1831}}^1\times {\mathrm{4073}}^1$

素因数の和:5931

約数の個数: 72

約数和(自身を含む): 45766598976

約数和(自身を除く): 24765819968

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 704, 1408, 1831, 2816, 3662, 4073, 7324, 8146, 14648, 16292, 20141, 29296, 32584, 40282, 44803, 58592, 65168, 80564, 89606, 117184, 130336, 161128, 179212, 234368, 260672, 322256, 358424, 468736, 521344, 644512, 716848, 1042688, 1289024, 1433696, 2578048, 2867392, 5156096, 5734784, 7457663, 11469568, 14915326, 29830652, 59661304, 82034293, 119322608, 164068586, 238645216, 328137172, 477290432, 656274344, 954580864, 1312548688, 1909161728, 2625097376, 5250194752, 10500389504, 21000779008]

約数ペア:

[(1, 21000779008), (2, 10500389504), (4, 5250194752), (8, 2625097376), (11, 1909161728), (16, 1312548688), (22, 954580864), (32, 656274344), (44, 477290432), (64, 328137172), (88, 238645216), (128, 164068586), (176, 119322608), (256, 82034293), (352, 59661304), (704, 29830652), (1408, 14915326), (1831, 11469568), (2816, 7457663), (3662, 5734784), (4073, 5156096), (7324, 2867392), (8146, 2578048), (14648, 1433696), (16292, 1289024), (20141, 1042688), (29296, 716848), (32584, 644512), (40282, 521344), (44803, 468736), (58592, 358424), (65168, 322256), (80564, 260672), (89606, 234368), (117184, 179212), (130336, 161128)]