21478184

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 50144640

約数和(自身を除く): 28666456

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 163, 181, 182, 326, 362, 364, 652, 724, 728, 1141, 1267, 1304, 1448, 2119, 2282, 2353, 2534, 4238, 4564, 4706, 5068, 8476, 9128, 9412, 10136, 14833, 16471, 16952, 18824, 29503, 29666, 32942, 59006, 59332, 65884, 118012, 118664, 131768, 206521, 236024, 383539, 413042, 767078, 826084, 1534156, 1652168, 2684773, 3068312, 5369546, 10739092, 21478184]

約数ペア:

[(1, 21478184), (2, 10739092), (4, 5369546), (7, 3068312), (8, 2684773), (13, 1652168), (14, 1534156), (26, 826084), (28, 767078), (52, 413042), (56, 383539), (91, 236024), (104, 206521), (163, 131768), (181, 118664), (182, 118012), (326, 65884), (362, 59332), (364, 59006), (652, 32942), (724, 29666), (728, 29503), (1141, 18824), (1267, 16952), (1304, 16471), (1448, 14833), (2119, 10136), (2282, 9412), (2353, 9128), (2534, 8476), (4238, 5068), (4564, 4706)]