21640008

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1613}}^1$

素因数の和:1678

約数の個数: 64

約数和(自身を含む): 59653440

約数和(自身を除く): 38013432

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 43, 52, 78, 86, 104, 129, 156, 172, 258, 312, 344, 516, 559, 1032, 1118, 1613, 1677, 2236, 3226, 3354, 4472, 4839, 6452, 6708, 9678, 12904, 13416, 19356, 20969, 38712, 41938, 62907, 69359, 83876, 125814, 138718, 167752, 208077, 251628, 277436, 416154, 503256, 554872, 832308, 901667, 1664616, 1803334, 2705001, 3606668, 5410002, 7213336, 10820004, 21640008]

約数ペア:

[(1, 21640008), (2, 10820004), (3, 7213336), (4, 5410002), (6, 3606668), (8, 2705001), (12, 1803334), (13, 1664616), (24, 901667), (26, 832308), (39, 554872), (43, 503256), (52, 416154), (78, 277436), (86, 251628), (104, 208077), (129, 167752), (156, 138718), (172, 125814), (258, 83876), (312, 69359), (344, 62907), (516, 41938), (559, 38712), (1032, 20969), (1118, 19356), (1613, 13416), (1677, 12904), (2236, 9678), (3226, 6708), (3354, 6452), (4472, 4839)]