21729864

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 58947840

約数和(自身を除く): 37217976

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 257, 271, 312, 514, 542, 771, 813, 1028, 1084, 1542, 1626, 2056, 2168, 3084, 3252, 3341, 3523, 6168, 6504, 6682, 7046, 10023, 10569, 13364, 14092, 20046, 21138, 26728, 28184, 40092, 42276, 69647, 80184, 84552, 139294, 208941, 278588, 417882, 557176, 835764, 905411, 1671528, 1810822, 2716233, 3621644, 5432466, 7243288, 10864932, 21729864]

約数ペア:

[(1, 21729864), (2, 10864932), (3, 7243288), (4, 5432466), (6, 3621644), (8, 2716233), (12, 1810822), (13, 1671528), (24, 905411), (26, 835764), (39, 557176), (52, 417882), (78, 278588), (104, 208941), (156, 139294), (257, 84552), (271, 80184), (312, 69647), (514, 42276), (542, 40092), (771, 28184), (813, 26728), (1028, 21138), (1084, 20046), (1542, 14092), (1626, 13364), (2056, 10569), (2168, 10023), (3084, 7046), (3252, 6682), (3341, 6504), (3523, 6168)]