21786560

素因数分解:

$2^6\times 5^1\times {\mathrm{103}}^1\times {\mathrm{661}}^1$

素因数の和:781

約数の個数: 56

約数和(自身を含む): 52462176

約数和(自身を除く): 30675616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 160, 206, 320, 412, 515, 661, 824, 1030, 1322, 1648, 2060, 2644, 3296, 3305, 4120, 5288, 6592, 6610, 8240, 10576, 13220, 16480, 21152, 26440, 32960, 42304, 52880, 68083, 105760, 136166, 211520, 272332, 340415, 544664, 680830, 1089328, 1361660, 2178656, 2723320, 4357312, 5446640, 10893280, 21786560]

約数ペア:

[(1, 21786560), (2, 10893280), (4, 5446640), (5, 4357312), (8, 2723320), (10, 2178656), (16, 1361660), (20, 1089328), (32, 680830), (40, 544664), (64, 340415), (80, 272332), (103, 211520), (160, 136166), (206, 105760), (320, 68083), (412, 52880), (515, 42304), (661, 32960), (824, 26440), (1030, 21152), (1322, 16480), (1648, 13220), (2060, 10576), (2644, 8240), (3296, 6610), (3305, 6592), (4120, 5288)]