21401388

素因数分解:

$2^2\times 3^3\times {\mathrm{71}}^1\times {\mathrm{2791}}^1$

素因数の和:2875

約数の個数: 48

約数和(自身を含む): 56286720

約数和(自身を除く): 34885332

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 108, 142, 213, 284, 426, 639, 852, 1278, 1917, 2556, 2791, 3834, 5582, 7668, 8373, 11164, 16746, 25119, 33492, 50238, 75357, 100476, 150714, 198161, 301428, 396322, 594483, 792644, 1188966, 1783449, 2377932, 3566898, 5350347, 7133796, 10700694, 21401388]

約数ペア:

[(1, 21401388), (2, 10700694), (3, 7133796), (4, 5350347), (6, 3566898), (9, 2377932), (12, 1783449), (18, 1188966), (27, 792644), (36, 594483), (54, 396322), (71, 301428), (108, 198161), (142, 150714), (213, 100476), (284, 75357), (426, 50238), (639, 33492), (852, 25119), (1278, 16746), (1917, 11164), (2556, 8373), (2791, 7668), (3834, 5582)]