21961408

素因数分解:

$2^6\times 7^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:222

約数の個数: 84

約数和(自身を含む): 52120800

約数和(自身を除く): 30159392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 49, 56, 64, 94, 98, 112, 149, 188, 196, 224, 298, 329, 376, 392, 448, 596, 658, 752, 784, 1043, 1192, 1316, 1504, 1568, 2086, 2303, 2384, 2632, 3008, 3136, 4172, 4606, 4768, 5264, 7003, 7301, 8344, 9212, 9536, 10528, 14006, 14602, 16688, 18424, 21056, 28012, 29204, 33376, 36848, 49021, 56024, 58408, 66752, 73696, 98042, 112048, 116816, 147392, 196084, 224096, 233632, 343147, 392168, 448192, 467264, 686294, 784336, 1372588, 1568672, 2745176, 3137344, 5490352, 10980704, 21961408]

約数ペア:

[(1, 21961408), (2, 10980704), (4, 5490352), (7, 3137344), (8, 2745176), (14, 1568672), (16, 1372588), (28, 784336), (32, 686294), (47, 467264), (49, 448192), (56, 392168), (64, 343147), (94, 233632), (98, 224096), (112, 196084), (149, 147392), (188, 116816), (196, 112048), (224, 98042), (298, 73696), (329, 66752), (376, 58408), (392, 56024), (448, 49021), (596, 36848), (658, 33376), (752, 29204), (784, 28012), (1043, 21056), (1192, 18424), (1316, 16688), (1504, 14602), (1568, 14006), (2086, 10528), (2303, 9536), (2384, 9212), (2632, 8344), (3008, 7301), (3136, 7003), (4172, 5264), (4606, 4768)]